OR FLAP DOT CRGNSA 100(7), Historic Columbia River Highway State Trail, Mitchell Point Dr. to Ruthton Trailhead

The work includes mobilization, construction survey and staking, contractor quality control and testing, soil erosion control, clearing and grubbing, removal of existing structures, roadway excavation, subexcavation, topsoil conservation, placement of geotextiles, foundation fill, riprap, roadway aggregate, asphalt concrete pavement (including temporary I-84 and TPAR sections), fog seal, tack coat, asphalt pavement milling, structural concrete, temporary support structures, concrete structure coating, precast structural concrete, pipe culverts, slotted drain pipe, large precast concrete arch culvert, manholes, inlets, underdrain systems, concrete curbs, detectable warning panels, guardrail systems (MGS), terminal systems, structure transition railing, concrete barrier, fence, bollards, stone masonry, markers, dump truck and excavator rental, manufactured topsoil placement, seeding, mulching, rolled erosion control product, sign systems, delineators, rumble strips, pavement markings, temporary traffic control devices (barricades, drums, portable changeable message signs, crash cushions, traffic signal system, portable traffic barrier), field office, fixtures, pedestrian railing, and stormwater management dry swale.