- County
- PLYMOUTH
- Bid Order
- 104
- Enriched
- Yes
- Projects
- NHSN-075-2(137)--2R-75
- Proposal Id
- 75-0752-137
- Letting Date
- Nov 17, 2026
- List Url Hint
- ia.iowadot.gov/contracts/biddocuments
- Package Text
- 10/14/2026 9:31 AM
CONTRACTS AND SPECIFICATIONS BUREAU
Proposal
Proposal ID: 75-0752-137 Letting Date: November 17, 2026
Call Order: 104
Proposal Work Type: PCC PAVEMENT - GRADE AND NEW
DBE Goal: 0.0%
Contracting Authority: IOWA DEPARTMENT OF TRANSPORTATION
Proposal Guaranty: $100,000.00
This proposal includes the following project(s):
Project Number: NHSN-075-2(137)--2R-75 County: PLYMOUTH
Project Work Type: PCC PAVEMENT - GRADE AND NEW Route: U.S. 75
Location: Co Rd C80 and Co Rd C70 Intersections
Road System: PRIMARY ROAD (on NHS)
Federal Aid - Wages: Non-Federal Aid - Predetermined Wages are not in Effect
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Contract Time
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
Site ID Site Details Liquidated
Damages
00 Late Start Date 07/26/2027 60 WORK DAYS $1,000.00
.
(*) - Indicates Cost Plus Time Site. See Schedule of Items for Cost Per Unit
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
Notes
Notes :
There are no notes for this proposal.
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal Specifications List
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
Note Description
001.2023 *** STANDARD SPECIFICATIONS -- SERIES 2023 ***
The Iowa Department of Transportation STANDARD SPECIFICATIONS FOR
HIGHWAY AND BRIDGE CONSTRUCTION, SERIES 2023, plus applicable General
Supplemental Specifications, Developmental Specifications, Supplemental
Specifications AND Special Provisions shall apply to construction work on this contract.
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal Specifications List
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
Note Description
005.1107.02 *** Revisions to Article 1107.02 ***
Article 1107.02, Insurance, is amended by the following modifications and additions.
This proposal note becomes null and void January 1, 2027.
A. It shall be the Contractor's responsibility to have liability insurance covering all
of the construction operations incident to contract completion and the Contractor must
have on file with the Contracting Authority a current "Certificate of Insurance" prior to
award of contract. The certificate shall identify the insurance company firm name and
address, Contractor firm name, policy period, type of policy, limits of coverage, and
scope of work covered (single contract or statewide). This requirement shall apply with
equal force, whether the work is performed by persons employed directly by the
Contractor including a subcontractor, persons employed by a subcontractor, or by an
independent contractor.
B. In addition to the above, the Contracting Authority shall be included as an
insured party, or a separate owner's protective policy shall be filed showing the
Contracting Authority as an insured party.
C. The liability insurance shall be written by an insurance company (or
companies) qualified to do business in Iowa. For independent contractors engaged
solely in the transportation of materials, the minimum coverage provided by such
insurance shall be not less than that required by Chapter 325A, Code of Iowa, for such
truck operators or contract carriers as defined therein. For all other contractors,
subcontractors, independent contractors, and the Contracting Authority, the minimum
coverage by such insurance shall be as follows:
General Liability, Including: BODILY INJURY
Independent Contractors $500,000 Each Occurrence
Contractual Liability, $500,000 Aggregate
Products and Completed PROPERTY DAMAGE
Operations $250,000 Each Occurrence
$250,000 Aggregate
or
BODILY INJURY AND PROPERTY DAMAGE
- COMBINED SINGLE LIMIT*
$750,000 Each Occurrence
$750,000 Aggregate
*A comprehensive Catastrophe Liability Policy (Umbrella) can be used to aid in
achieving the minimum required limits.
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal Specifications List
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
Note Description
*A comprehensive Catastrophe Liability Policy (Umbrella) can be used to aid in
achieving the minimum required limits.
D. Failure on the part of the Contractor to comply with the requirements of this
article will be considered sufficient cause to suspend the work, withhold estimates, and
to deny the Contractor from receiving further contract awards, as provided in Article
1103.01.
410.11 *** STORM WATER POLLUTION PREVENTION PLAN ***
A Storm Water Pollution Prevention Plan has been developed by the Contracting
Authority for one or more projects on this contract. See the project plans (or other
contract document) for specific Storm Water Pollution Prevention Plan details.
500.01 *** WINTER WORK ***
The free time allowed between November 15 and April 1 will not be permitted on this
project. The Contractor shall work during the winter on all working days as defined in
Article 1101.03 'Working Day'.
DS-23032 DEVELOPMENTAL SPECIFICATIONS FOR ELECTRONIC TICKETING
DS-23079 DEVELOPMENTAL SPECIFICATIONS FOR PREFORMED THERMOPLASTIC
PAVEMENT MARKINGS
GS-23007 GENERAL SUPPLEMENTAL SPECIFICATIONS FOR HIGHWAY AND BRIDGE
CONSTRUCTION, OCTOBER 20, 2026 RELEASE
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal Schedule of Items
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
SECTION: 0001
Roadway Items
Proposal
Line
Number
Item Number
Item Description
Item Quantity
and Units
Unit Price Bid Amount
Dollars Cents Dollars Cents
0010 2102-0425071 4,477.300
SPECIAL BACKFILL CY _________._____ _________._____
0020 2102-2625000 387.000
EMBANKMENT-IN-PLACE CY _________._____ _________._____
0030 2102-2710070 1,855.000
EXCAVATION, CLASS 10, ROADWAY
AND BORROW
CY _________._____ _________._____
0040 2102-2710090 1,135.000
EXCAVATION, CLASS 10, WASTE CY _________._____ _________._____
0050 2102-5020010 0.600
OBLITERATE OLD ROADBED STA _________._____ _________._____
0060 2105-8425015 2,349.000
TOPSOIL, STRIP, SALVAGE AND
SPREAD
CY _________._____ _________._____
0070 2107-0875100 2,242.000
COMPACTION WITH MOISTURE
CONTROL
CY _________._____ _________._____
0080 2113-0001100 526.200
SUBGRADE STABILIZATION
MATERIAL, POLYMER GRID
SY _________._____ _________._____
0090 2121-7425020 194.200
GRANULAR SHOULDERS, TYPE B TON _________._____ _________._____
0100 2122-5190010 4,170.300
PAVED SHOULDER, P.C. CONCRETE,
10 IN.
SY _________._____ _________._____
0110 2123-7450000 74.470
SHOULDER CONSTRUCTION, EARTH STA _________._____ _________._____
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal Schedule of Items
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
SECTION: 0001
Roadway Items
Proposal
Line
Number
Item Number
Item Description
Item Quantity
and Units
Unit Price Bid Amount
Dollars Cents Dollars Cents
0120 2301-1033100 7,621.300
STANDARD OR SLIP FORM
PORTLAND CEMENT CONCRETE
PAVEMENT, CLASS C, CLASS 3
DURABILITY, 10 IN.
SY _________._____ _________._____
0130 2301-4875006 21.500
MEDIAN, P.C. CONCRETE, 6 IN. SY _________._____ _________._____
0140 2301-7000110 8,917.000
PAYMENT ADJUSTMENT
INCENTIVE/DISINCENTIVE FOR PCC
PAVEMENT THICKNESS (BY
SCHEDULE)
EACH 1.00000 8,917.00
0150 2317-7000110 5,716.000
PAYMENT ADJUSTMENT
INCENTIVE/DISINCENTIVE FOR PCC
PAVEMENT SMOOTHNESS (BY
SCHEDULE)
EACH 1.00000 5,716.00
0160 2402-0425040 193.000
FLOODED BACKFILL CY _________._____ _________._____
0170 2402-2720100 245.100
EXCAVATION, CLASS 20, FOR
ROADWAY PIPE CULVERT
CY _________._____ _________._____
0180 2416-0100024 2.000
APRONS, CONCRETE, 24 IN. DIA. EACH _________._____ _________._____
0190 2416-1180024 278.000
CULVERT, CONCRETE ROADWAY
PIPE, 24 IN. DIA.
LF _________._____ _________._____
0200 2417-0330024 6.000
APRONS, SAFETY SLOPE, 24 IN. DIA. EACH _________._____ _________._____
0210 2502-6745952 1,657.000
REMOVAL OF SUBDRAIN LF _________._____ _________._____
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal Schedule of Items
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
SECTION: 0001
Roadway Items
Proposal
Line
Number
Item Number
Item Description
Item Quantity
and Units
Unit Price Bid Amount
Dollars Cents Dollars Cents
0220 2502-8212034 897.000
SUBDRAIN, LONGITUDINAL,
(SHOULDER) 4 IN. DIA.
LF _________._____ _________._____
0230 2502-8221306 3.000
SUBDRAIN OUTLET, DR-306 EACH _________._____ _________._____
0240 2507-3250005 47.400
ENGINEERING FABRIC SY _________._____ _________._____
0250 2507-8029000 26.010
EROSION STONE TON _________._____ _________._____
0260 2510-6745850 12,868.000
REMOVAL OF PAVEMENT SY _________._____ _________._____
0270 2512-1725206 69.200
CURB AND GUTTER, P.C. CONCRETE,
2.0 FT.
LF _________._____ _________._____
0280 2524-6765210 6.000
REMOVAL OF TYPE A SIGN
ASSEMBLY
EACH _________._____ _________._____
0290 2526-8285030
CONSTRUCTION SURVEY, RIGHT OF
WAY
LUMP SUM LUMP SUM _________._____
0300 2526-8285040
CONSTRUCTION SURVEY, LOCATION
SURVEY
LUMP SUM LUMP SUM _________._____
0310 2527-9263155 35.000
PRE-CUT SYMBOLS AND LEGENDS,
PREFORMED THERMOPLASTIC
MARKING MATERIAL
EACH _________._____ _________._____
0320 2527-9263181 68.240
PAVEMENT MARKINGS REMOVED STA _________._____ _________._____
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal Schedule of Items
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
SECTION: 0001
Roadway Items
Proposal
Line
Number
Item Number
Item Description
Item Quantity
and Units
Unit Price Bid Amount
Dollars Cents Dollars Cents
0330 2527-9263209 125.560
PAINTED PAVEMENT MARKINGS,
WATERBORNE OR SOLVENT-BASED
STA _________._____ _________._____
0340 2527-9263225 28.820
PERMANENT TAPE MARKINGS,
PREFORMED THERMOPLASTIC
MARKING MATERIAL
STA _________._____ _________._____
0350 2527-9270112 152.840
GROOVES CUT FOR PAVEMENT
MARKINGS
STA _________._____ _________._____
0360 2527-9270120 35.000
GROOVES CUT FOR SYMBOLS AND
LEGENDS
EACH _________._____ _________._____
0370 2528-2518000 11.000
SAFETY CLOSURE EACH _________._____ _________._____
0380 2528-2518181 24.000
PERMANENT ROAD CLOSURE,
RURAL, SI-181
LF _________._____ _________._____
0390 2528-8445110
TRAFFIC CONTROL LUMP SUM LUMP SUM _________._____
0400 2528-9290050 100.000
PORTABLE DYNAMIC MESSAGE SIGN
(PDMS)
CDAY _________._____ _________._____
0410 2533-4980005
MOBILIZATION LUMP SUM LUMP SUM _________._____
0420 2548-0000200 56.620
MILLED SHOULDER RUMBLE STRIPS,
PCC SURFACE
STA _________._____ _________._____
0430 2601-2633100 6.280
MOWING ACRE _________._____ _________._____
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal Schedule of Items
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
SECTION: 0001
Roadway Items
Proposal
Line
Number
Item Number
Item Description
Item Quantity
and Units
Unit Price Bid Amount
Dollars Cents Dollars Cents
0440 2601-2634105 3.140
MULCHING, BONDED FIBER MATRIX ACRE _________._____ _________._____
0450 2601-2636015 0.090
NATIVE GRASS SEEDING ACRE _________._____ _________._____
0460 2601-2636043 3.050
SEEDING AND FERTILIZING (RURAL) ACRE _________._____ _________._____
0470 2601-2642100 0.310
STABILIZING CROP - SEEDING AND
FERTILIZING
ACRE _________._____ _________._____
0480 2602-0000020 2,712.000
SILT FENCE LF _________._____ _________._____
0490 2602-0000030 1,260.000
SILT FENCE FOR DITCH CHECKS LF _________._____ _________._____
0500 2602-0000050 12.000
SILT BASINS EACH _________._____ _________._____
0510 2602-0000071 1,986.000
REMOVAL OF SILT FENCE OR SILT
FENCE FOR DITCH CHECKS
LF _________._____ _________._____
0520 2602-0000080 12.000
REMOVAL OF SILT BASINS EACH _________._____ _________._____
0530 2602-0000101 397.000
MAINTENANCE OF SILT FENCE OR
SILT FENCE FOR DITCH CHECK
LF _________._____ _________._____
0540 2602-0000312 200.000
PERIMETER AND SLOPE SEDIMENT
CONTROL DEVICE, 12 IN. DIA.
LF _________._____ _________._____
0550 2602-0000320 360.000
PERIMETER AND SLOPE SEDIMENT
CONTROL DEVICE, 20 IN. DIA.
LF _________._____ _________._____
Contracts and Specifications Bureau
10/14/2026 9:31 AM
Proposal Schedule of Items
Proposal ID: 75-0752-137 Call Order: 104 Letting Date: November 17, 2026
SECTION: 0001
Roadway Items
Proposal
Line
Number
Item Number
Item Description
Item Quantity
and Units
Unit Price Bid Amount
Dollars Cents Dollars Cents
0560 2602-0000351 960.000
REMOVAL OF PERIMETER AND
SLOPE OR DITCH CHECK SEDIMENT
CONTROL DEVICE
LF _________._____ _________._____
0570 2602-0000362 200.000
DITCH CHECK SEDIMENT CONTROL
DEVICE, 12 IN. DIA.
LF _________._____ _________._____
0580 2602-0000370 200.000
DITCH CHECK SEDIMENT CONTROL
DEVICE, 20 IN. DIA.
LF _________._____ _________._____
0590 2602-0010010 1.000
MOBILIZATIONS, EROSION CONTROL EACH 600.00000 600.00
0600 2602-0010020 1.000
MOBILIZATIONS, EMERGENCY
EROSION CONTROL
EACH 1,200.00000 1,200.00
0610 2612-0000520 3.140
ROADSIDE SPRAY FOR WEED
CONTROL
ACRE _________._____ _________._____
Section: 0001 Total: _________._____
Total Bid: _________._____
DS-23032
(New)
DEVELOPMENTAL SPECIFICATIONS
FOR
ELECTRONIC TICKETING
Effective Date
October 17, 2023
THE STANDARD SPECIFICATIONS, SERIES 2023, ARE AMENDED BY THE FOLLOWING
MODIFICATIONS AND ADDITIONS. THESE ARE DEVELOPMENTAL SPECIFICATIONS AND THEY
SHALL PREVAIL OVER THOSE PUBLISHED IN THE STANDARD SPECIFICATIONS.
23032.01 DESCRIPTION.
A. This work shall consist of providing electronic material tickets for all loads of flexible paving
mixture or ready mixed PCC delivered to the project. Electronic ticketing will only be required for
the primary material supplied to the project, i.e. flexible paving mixture for an HMA resurfacing
project or PCC for a PCC paving project. Electronic tickets for other materials supplied to a
project may be submitted at the Contractor’s option. The Contractor/supplier can use the plant
ticketing system of their choice to create the material ticket data.
B. Ticket data shall include the following:
1. After each truck is loaded, ticket data must be electronically captured, and ticket information
uploaded via web service / Application Programming Interface (API) to the agency.
2. Material ticket data will be submitted to https://iowa.dot-portal.io via an HTTPS POST as
JSON documents. Include the API key specific to each customer in each request as an HTTP
header.
3. Material supplier must test to confirm that ticketing data can be shared from the originating
system no less than 30 days prior to project start. Topic shall be discussed at the pre-
construction meeting.
4. Ticket data must be available immediately upon project start so there are no delays to
viewing tickets.
5. Provide the same data that is currently accessible and viewed by agency users previously on
printed tickets specific to state projects.
6. Transmit ticket data before the truck leaves the plant and transmit any updates to the ticket
data within 5 minutes of a change.
DS-23032, Page 2 of 3
23032.02 CONSTRUCTION DATA.
Contractor shall submit material ticket data in accordance with the plant manufacturer’s system
recommendations to provide the following.
A. Net weight (or volume for ready mix concrete) of material being transported (to nearest 0.01 ton
or cubic yard).
B. Running daily total of net weight of material (or volume for ready mix concrete) being transported
(to the nearest 0.01 ton or cubic yard).
C. Each material ticket shall contain the following:
1. General Ticket information (All Material).
a. Date.
b. Iowa DOT Project Number.
c. Name of Contractor
d. Name of material supplier.
e. Unique truck ID.
f. Plant/scale name (source).
g. Truck Status Times:
1) Loaded time (time batched) shall be available.
2) Provided other truck status times as available.
a) Ticketed.
b) Load time.
c) Left plant.
d) Arrive at project.
e) Begin unload.
f) Finish unload.
g) Leave project.
2. Portland Cement Concrete.
a. Loaded time (water/cement time).
b. Wet and dry batch weights (if computer generated).
c. Water:
1) In aggregate.
2) Total water.
3) Water/cement ratio.
4) Max water/cement ratio.
5) Allowable water to add.
d. Admixtures (including brand names if available):
1) Retarder and weights.
2) Water reducer and weights.
3) Air entrainment and weights.
4) Special performance admixtures and weights.
5) Concrete fibers.
e. Cementitious material(s) and weights.
f. CPI Name and certificate number.
3. Flexible Pavement Mixture.
a. Type of material.
b. Gross weight (if not automatic weighed).
c. Tare weight (if not automatic weighed).
d. Net weight.
e. Mix design number.
DS-23032, Page 3 of 3
23032.03 METHOD OF MEASUREMENT.
None.
23032.04 BASIS OF PAYMENT.
Payment for electronic ticketing will be incidental to the material being provided.
DS- 23079
(Replaces DS-23061)
DEVELOPMENTAL SPECIFICATIONS
FOR
PREFORMED THERMOPLASTIC PAVEMENT MARKINGS
Effective Date
October 21, 2025
THE STANDARD SPECIFICATIONS, SERIES OF 2023, ARE AMENDED BY THE FOLLOWING
MODIFICATIONS AND ADDITIONS. THESE ARE DEVELOPMENTAL SPECIFICATIONS AND THEY
SHALL PREVAIL OVER THOSE PUBLISHED IN THE STANDARD SPECIFICATIONS.
23079.01 DESCRIPTION.
Under this work, the Contractor shall furnish and apply preformed thermoplastic pavement markings at
the location and in accordance with patterns indicated on the plans or as ordered by the Engineer, and in
conformance with the MUTCD and these specifications. This work may also include, when shown on the
plans, grooves cut for lines and symbols and legends.
23079.02 MATERIALS.
A. Preformed Thermoplastic.
1. Preformed Thermoplastic shall meet the requirements of Materials I.M. 483.05. Approved
manufacturers and brand names are listed in MAPLE.
2. Preformed thermoplastic shall be capable of application on bituminous and concrete
pavements.
3. The markings must be resistant to the detrimental effects of motor fuels, lubricants, hydraulic
fluids, antifreeze, exposure to sunlight, water, salt or adverse weather conditions.
4. Lines, legends and symbols must be capable of being affixed to bituminous and/or Portland
cement concrete pavements by heating.
5. Follow manufacturers recommendations for storage, handling and application temperatures
and conditions.
6. Store markings in accordance with the manufacturer’s instructions and manufacturer’s
requirements for shelf life and storage conditions. Ensure markings are clearly labeled and in
a dry and clean condition prior to use. Shipping documents and containers shall have
identification numbers or batch dates for confirmation of when products were manufactured,
brand name, name of manufacturer, lot or batch number, temperature range for storage,
expiration date, the quantity contained and include material safety data sheets. Place
markings within the manufacturers published shelf life for the material. Do not place markings
outside of expiration dates for the markings without written consent from the manufacturer
provided to the engineer PRIOR to placement.
DS-23079, Page 2 of 4
7. Use Markings conforming to the Chromaticity limits and within the coordinates for the
respective colors for daytime and nighttime as indicated in ASTM D6628 Tables 1 and 2.
Lightness Limits shall conform to ASTM D6628 Table 3 for each respective color of marking.
8. Pigments.
a. White: The material shall be manufactured with sufficient titanium dioxide pigment to
meet FHWA Docket No. FHWA-99-6190 Table 5 and Table 6 as revised and corrected.
b. Red, Blue, and Yellow: The material shall be manufactured with sufficient pigment to
meet FHWA Docket No. FHWA-99-6190 Table 5 and Table 6 as revised and corrected.
The yellow pigments must be organic and must be heavy-metal free.
c. Other Colors: The pigments must be heavy-metal free.
9. Skid Resistance.
The surface, with properly applied and embedded surface beads, must provide a minimum
resistance value of 45 BPN when tested according to ASTM E 303. If enhanced skid
resistance is specified on plans provide a minimum resistance value of 60 BPN.
10. Thickness.
The material must be supplied at a minimum thickness of 125 mils.
11. Bond Strength.
Able to achieve 200 psi Minimum bond strength per ASTM D 4796.
12. Binder Content.
Minimum Binder content of 18% per ASTM D 4797.
B. Primer.
Primer shall be applied as recommended by the manufacturer.
C. Glass Beads.
1. Glass beads, if applied to the surface of pre-formed thermoplastic markings, shall comply, at
a minimum, with the requirements of AASHTO M247 Type 1 and / or Type 3 and / or Section
4184 of the Standard Specifications.
2. The material must contain a minimum of 30% intermixed graded glass beads by weight. The
intermixed beads shall be conforming to AASHTO designation M247, with minimum 80% true
spheres and minimum refractive index of 1.50.
3. The material must have factory applied coated surface beads in addition to the intermixed
beads at a rate of 1 pound (± 10%) per 10 square feet. These factory applied coated surface
beads shall have a minimum of 80% true spheres, minimum refractive index of 1.50.
D. Acceptance.
Acceptance of material shall be based on final inspection per Article DS-23079.03, F and
satisfactory field performance. Pavement markings shall be approved prior to installation on a
project. Approval does not preclude the need for acceptance sampling and testing on a project-
by-project basis.
23079.03 CONSTRUCTION.
A. Contractor Qualifications.
Provide a letter of certification from the preformed thermoplastic pavement marking manufacturer
indicating the Contractor’s qualifications to install their product.
DS-23079, Page 3 of 4
B. Equipment.
All equipment shall be of such design and maintained in such condition as to properly heat, mix,
and apply the material.
C. Surface Preparation.
1. Grooving for pavement markings and legends / symbols and shall be 130 mils -0/+10 mils.
2. The pavement surface on which the thermoplastic material is to be placed shall be clean and
dry. Even if the pavement is visibly dry, subsurface moisture may be present in amounts
sufficient to affect bonding. To test for dryness, a 3 to 6 foot section of tar paper shall be laid
on the pavement and molten thermoplastic applied on top. After 30 seconds, lift the paper
and check for moisture on the bottom of the paper. If the paper is dripping wet, wait until the
pavement has dried before applying the thermoplastic. If the paper shows only a damp spot,
proceed with the thermoplastic application.
3. Pavement surfaces shall be inspected for cleanliness and any dirt, debris, or other
contaminants on the surface to be marked shall be removed.
D. Application.
1. Asphalt.
The material shall be applied as recommended by the manufacturer. The material must be
able to be applied without preheating of the pavement. A primer may be required pursuant to
manufacturers installation requirements.
2. Portland Cement Concrete.
The same application procedure shall be used as described in Article DS-23079.03, D, 1.
However, a primer shall be applied and cured in accordance with the recommendations of the
manufacturer of the thermoplastic material.
3. Glass Beads.
Glass beads shall be applied as recommended by the manufacturers of the thermoplastic
material.
E. General Requirements.
The applied thermoplastic markings will be inspected continually for overall workmanship.
Markings shall have clean cut edges and the color shall be distinctive. The glass beads shall
appear uniform on the entire marking surface.
F. Final Inspection.
1. Provide an acceptable 30 meter geometry retro-reflectometer to use on the project which will
remain the property of the Contractor. In the presence of the Engineer, measure the retro-
reflectivity of selected preformed thermoplastic markings. Take a minimum of five randomly
spaced readings per color line every 1 mile, or per legend or symbol randomly selected per
tenth symbol. Provide the engineer a document indicating results of retro-reflective testing for
the project files. The material, when applied in accordance with manufacturer’s guidelines,
must demonstrate a uniform level of sufficient nighttime retroreflection when tested in
accordance initial minimum retroreflectance values of 300 mcd/sq m/lux for white markings
and 200 mcd/sq m/lux for yellow markings according to ASTM E 1710 (AASHTO T 398). The
minimum retro-reflectivity shall be:
Minimum Coefficient of Retroreflected Luminance (mcd / sq. ft. / ft.-cdl.)
White lines / Symbols / Legends 300
Yellow lines / Symbols / Legends 200
DS-23079, Page 4 of 4
2. If the marking does not meet these initial retro-reflectivity readings, if the marking does not
have the required minimum thickness, or if the marking does not comply with the
specifications for any other reason, the Engineer may require complete removal or correction
at the Contractor’s expense.
23079.04 METHOD OF MEASUREMENT.
Measurement for pavement markings or symbols and legends, satisfactorily placed, will be as follows:
A. Preformed Thermoplastic Pavement Markings.
The number of stations of markings placed will be calculated by the Engineer, using the
beginning and ending points for each type of line placed, based on a single 4 inch width as
outlined in plans. The types are as shown in the plans. The calculations for broken or dotted lines
are adjusted in the table to exclude skips as specified. The calculation for solid lines will be
adjusted to exclude breaks. The quantities for several types of lines will be totaled to a single
quantity of thermoplastic longitudinal 6 inch lines in stations.
B. Preformed Thermoplastic Symbols and Legends.
Each precut symbol or legend is indicated on the plans, and the units will be counted. Each of the
following is a complete unit: each STOP; each SCHOOL legend (one lane or two lane); each RxR
marking for railroad and highway grade crossing; each ONLY; each AHEAD; each freeway,
expressway, and ramp arrow; each straight, curve, or combined arrow; each route shield.
C. Grooves Cut for Pavement Markings or Symbols and Legends.
Per Articles 2527.04, A, 11 and 12 of the Standard Specifications.
23079.05 BASIS OF PAYMENT.
A. Payment for pavement markings or symbols and legends, satisfactorily placed, will be at the
contract unit price as follows:
1. Preformed Thermoplastic Pavement Markings.
For the number of stations of thermoplastic longitudinal lines and transverse markings
placed, the Contractor will be paid the contract price per station.
2. Preformed Thermoplastic Symbols and Legends.
For each unit of precut symbol and legend placed, the Contractor will be paid the contract
price.
3. Grooves Cut for Pavement Markings or Symbols and Legends.
Per Articles 2527.05, A, 11 and 12 of the Standard Specifications.
B. This compensation will be full payment for all work involved in cleaning and preparing the surface
and furnishing, applying, and maintaining the pavement marking, and for furnishing all equipment,
tools, and labor necessary to complete the work. Removal of existing markings is included as a
bid item in the plans and paid for at the contract unit price. The accepted quantity of thermoplastic
pavement marking will be paid for at the contract unit price.
- Package Files
- Name
- 17NOV104\Plan\75-0752-137\75-0752-137_C.pdf
- Bytes
- 188466851
- Name
- 17NOV104\Prop\DS-23032.pdf
- Bytes
- 47943
- Name
- 17NOV104\Prop\DS-23079.pdf
- Bytes
- 130866
- Name
- 17NOV104\Prop\estprop104.pdf
- Bytes
- 292802
- Package Pages
- 19
- Categorized By
- llm
- Package Scope Docs
- 3
- Package Manifest Only
- No
Iowa Department of TransportationIssuing agency·Iowa·via a public procurement portal