Phase 6US275/IA92 & I29 (Phase 2),
US275/IA92 & I29 (Phase 2),
Mosquito Creek Bridges
Construction started in March of 2015 with Ames Construction Inc.
as the Prime Contractor.
- Major work included the installation of (2) temporary traffic signals, (3) new permanent signal intersections, (8) 120′ and 140′ high mast tower lighting poles with 48″ diameter drilled shafts ranging from 30′ to 36′ deep, (6) bridge mounted Lighting poles, (42) steel breakaway sign post and associated footings, (3162 sq ft) of Type B extruded back sign panels, (1) 80’ overhead sign structure, (1) 100’ overhead sign structure, (1) 120’ overhead sign structure, (71) Lighting pole and footing removals, (48) temporary wood lighting poles and overhead circuits, and (9000’) of electrical circuits.
- The traffic signal installation included mast arm and lighting poles ranging from 50’ to 85’ long with foundations up to 42” diameter by 28’ deep, (37) signal heads, Wavetronix Presence and Advanced detection equipment at three intersections, GPS Opticom preemption systems, NEMA Signal controllers with Battery Backup Systems (BBS’s), (2600’) of 2” and 3” trenched/bored conduits with related IMSA signal circuit wiring, and Tesco meter pedestals. Signal foundations were again constructed via drilled shafts meeting the IADOT standards for Wet Shaft construction with polymer and mineral slurries ranging in size from 36″ in diameter by 10′ deep up to 42″ in diameter by 28′ deep. The intersections involved where US275 and I29 Southbound Ramp, US275 and I29 Northbound Ramp, and US275 and Harry Langdon Blvd.
- This project also included an ITS infrastructure package of (6200’) of 2”/3” HDPE conduits with fiber optic vaults, ITS equipment cabinets, poles, devices, and power cabling.
