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US 301 Widening from south of US 98 to SR 50 (Cortez Blvd)
- Project ID
- 447536-2-52-01
Project Details
- Work Type
- Widening
- Phase
- Construction
- Limits
- south of US 98 to north of SR 50
- Project Start
- July 22, 2024
- Length
- 4.2 miles
- City
- County
- Road
- Construction Cost
- $87.3 million
- Estimated Completion
- Fall 2028
- Contractor
- Prince-Ajax US-301 Mobility Partners
About
This design-build project is widening US 301 (Treiman Blvd.) to a four-lane divided highway with medians, paved shoulders, and sidewalks. The project will add capacity and enhance mobility and safety. The project limits are from north of Marka Drive (south of the US 98/McKethan Road intersection) to just south of Ridge Manor Boulevard (north of SR 50).
Improvements will include roadway widening and reconstruction, new bridge construction, lighting, drainage, signing and pavement markings, and signalization.
One vehicular bridge and a pedestrian bridge will be constructed over the Withlacoochee River. The existing bridge will be converted to northbound traffic, while a new bridge will built for southbound traffic.
A roundabout will be built at the intersection of US 301 and Trilby Road / CR 575 (formerly SR 575 until 7/1/2026). To view a video about driving roundabouts, click here.
A traffic signal will be added at the US 301 and US 98 intersection.
The contractor is responsible for finalizing the design plans and building the improvements in this design-build contract. The design portion of the contract began in July 2024. Clearing operations began in early January 2025. Major construction activities began in summer 2025.
Contact Information
-
Project Information
- Name:
- John McShaffrey
- Phone:
- 813-975-6930
- Email:
- john.mcshaffrey@dot.state.fl.us
-
Media Contact
- Name:
- Kayla Mejia
- Phone:
- 813-975-6060
- Email:
- Kayla.Mejia@dot.state.fl.us
Closures
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CR 575 to reopen and Trilby Road to close at US 301
Trilby/Lacoochee – Beginning Sunday night, October 25 into the morning of Monday, October 26, temporary changes will take place at the US 301 intersection with CR 575 and Trilby Road, weather permitting.
- CR 575 (formerly SR 575) on the east side of US 301 will reopen to traffic. This intersection has been closed since early March 2026 to construct the east side of a new roundabout at the US 301 intersection.
- A 350-foot-long section of Trilby Road west of US 301 will close and remain closed until approximately spring/summer 2027 to allow crews to build the west side of the roundabout.
The detours for the impacted traffic movements will be as follows:- Northbound US 301 – south of US 98 – to westbound Trilby Road: Turn left onto US 98 and go north on US 98 to Trilby Road at the roundabout.
- Northbound US 301 – north of US 98 – to westbound Trilby Road: Continue past Trilby Road on US 301. Turn left onto SR 50 and go west. Turn left onto US 98 (McKethan Road) and go south to Trilby Road at the roundabout.
- Southbound US 301 to westbound Trilby Road: Continue past Trilby Road. Turn right and go north on US 98 to Trilby Road at the roundabout.
- Eastbound Trilby Road to US 301: At the roundabout, go south on US 98 to US 301.
- Eastbound Trilby Road to eastbound CR 575 (where it can’t cross US 301 due to the closure): At the roundabout, go south on US 98 to US 301. Turn left and go north on US 301. Turn right onto CR 575.
- Westbound CR 575 to Trilby Road (where it can’t cross US 301 onto Trilby Road due to the closure): Turn left onto US 301 and go south. Turn right onto US 98 and go north to Trilby Road at the roundabout.
Detour Map
US 301 traffic will not be impacted by the closure. Drivers using or connecting to Trilby Road are advised to plan a little extra time into their plans to travel through the detour routes. -
US 301 from US 98 to south of the Withlacoochee River bridge
Lane closures/flagging operations: Monday, October 12 through Friday, October 16 nights from 8 p.m. to 6:30 a.m.
US 301 between Belt Drive and Dogwood Drive
Lane closures/flagging operations: Monday, October 12 through Friday, October 16 nights from 8 p.m. to 6:30 a.m.
-
CR 575 CLOSED at US 301
Trilby/Lacoochee – CR 575 (formerly SR 575) is closed on the east side of US 301, as of March 2, 2026. The closure is needed to build the east side of a new roundabout at the intersection. The closure is expected to be in place into August 2026. CR 575 will remain open to local traffic east of the closure at US 301.
DETOURS: Drivers can access CR 575 by taking Cummer Road to Bower Road to CR 575. Access will also remain available from SR 50 (Cortez Blvd) by going south on Burwell Road (Hernando CR 575) which turns into Pasco County CR 575 at Lacoochee Clay Sink Road.