Greene County Route 65
MoDOT Numbers J8P0605G & J8P2158
This project consisted of widening US 65 to a six-lane highway (three lanes in each direction) between US 60 and Evans Road. The additional lanes were added to the median sides of the northbound and southbound lanes with the project length being approximately 4.5 miles long. The average annual daily traffic (AADT) for this section of highway was more than 84,000 vehicles per day. The project had stiff liquidated damages if southbound US-65 traffic was not shifted back to the wider re-decked portion of the bridge by the end of 2016. Due to migratory bird issues on the bridge, ESS could not begin construction until after the summer, however, even with the compressed schedule, ESS completed the critical widening in time resulting in incentive payment.
Owner Missouri Department of Transportation
Civil Engineer Missouri Department of Transportation
ESS Role General Contractor
Project Duration 19 months
Scope of Work
There were two major bridges over Lake Springfield that were within the project limits. The southbound structure was widened and re-decked in stages while maintaining traffic flow. After completing the southbound bridge, the northbound traffic was shifted onto it. The northbound bridge was demolished and replaced with a four-span concrete NU girder structure. The longest bridge was 146 feet and was over the lake. To minimize lake impacts, a girder launcher was utilized to trolley the giant beams over the waterway. The resulting scope of work included; 27,000 cubic yards of grading, 30,200 tons of base rock, 62,040 square yards of asphalt, 104,600 linear feet of pavement markings, highway lighting and signage, guardrails, 5,100 square yards of concrete, 17,730 linear feet of concrete traffic barriers, and 12,200 linear feet and 210 structures of storm sewer. The bridge and structural work included; 476 vertical feet of drilled shafts, 203 vertical feet of rock sockets, 119,000 lbs of rebar, 464,170 lbs of structural steel, and 3,788 linear feet of precast concrete girders for a one slab on steel, six-span, multi-phase, variable depth steel girder bridge, and 1 slab on NU girder, four-span bridge.