I-75 Improvements from North of Hernando to South of CR 470 Design-Build

Florida Department of Transportation

I-75 Improvements from North of Hernando to South of CR 470 Design-Build

Sumter County, FL

This award-winning project included the widening of 13.5 miles of I-75 from a four-lane to a six-lane facility and a complete interchange reconstruction.

Improvements on this project included roadway, earthwork, drainage, bridge, MSE walls, miscellaneous structures, guardrail, signing and pavement marking, signalization, Intelligent Transportation Systems (ITS) improvements, geotechnical, utilities, subsurface utility engineering, public involvement, and environmental permitting.

Scope of Work

Widening of I-75 from four to six lanes for 13 miles
Demolition of existing bridges and reconstruction of new
bridges in phased construction using a temporary traffic
crossover
Complete reconstruction of the interchange
Ramp reconstruction with milling and resurfacing improvements at the interchange

Unique Challenges

Approved ATC eliminated guardrail in each direction and
the difficult maintenance of the 1:2 side slopes
By adjusting the horizontal and vertical geometry of Ramp B, it reduced the complexity of the construction and the need to install a temporary ramp detour
Project required the utility relocations to be coordinated by
the Design-Build Team