FDOT Project on the U.S. 1 Bridge

Florida Department of Transportation SealThe Florida Department of Transportation (FDOT) will replace the U.S. 1 Bridge over the Loxahatchee River/Intracoastal Waterway in the Town of Jupiter.

As part of the Florida Department of Transportation’s project to replace the U.S. 1 Bridge, one lane of southbound U.S. 1 between Riverside Drive and the existing bridge will be closed Sunday, August 14 from 10:00 pm to 12:00 am.

Project At-A-Glance

In preparation for the replacement of the U.S. 1 Bridge, the Florida Department of Transportation (FDOT) is performing intersection improvements along the planned detour route once the bridge is closed. These improvements include the intersection of Alternate A1A and Old Dixie Highway. 

Start DateEnd DateDescription
Thursday, August 4


Approximately September 4Alternate A1A
The outside westbound/southbound lane between U.S. 1 and Riverside Drive will be closed continuously for approximately one month.
Thursday, August 4


Approximately September 4U.S. 1
The right-turn lane from southbound U.S. 1 to westbound/southbound Alternate A1A will be closed continuously for approximately one month.


Additionally, there may be nightly lane closures (9:00 pm – 6:00 am) on U.S. 1, Indiantown Road, Alternate A1A and Old Dixie Highway as well as intermittent daytime lane closures from 9:00 am – 4:00 pm on Alternate A1A and U.S. 1.
Sunday, August 14
10:00 pm
Sunday, August 14
12:00 am
U.S. 1 Bridge, one lane of southbound U.S. 1 between Riverside Drive and the existing bridge will be closed. Sunday, August 14 from 10:00 pm to 12:00 am.
2021Approximately Early 2026The project began in 2021 with road work to improve intersections ahead of the full bridge closure starting in the spring of 2023. The project is expected to finish in early 2026. The bridge will be completely closed for 20 months and then portions will be reopened as the project is finished.

For more information about this project, visit FDOT's current project page.  

FDOT US1 bridge rendering Opens in new windowContractor: Johnson Brothers Corporation

The replacement bridge will consist of two 11-foot travel lanes in each direction, 8-foot sidewalks and 7-foot bike lanes in both directions. Pedestrians will be separated from traffic with permanent concrete barriers. The new bridge will be a twin double-leaf drawbridge with up to 42 feet of vertical clearance and a navigable channel width of 125 feet. It will also feature a concrete bridge deck to reduce traffic noise, a new tender house and pedestrian overlooks. 

In preparation for a 20-month bridge closure and detour, temporary intersection improvements that consist of additional turn lanes will occur at: U.S. 1 at Indiantown Road, Alternate A1A and Indiantown Road and U.S. 1 and Alternate A1A/Beach Road. Permanent intersection improvements also will occur at Alternate A1A and Old Dixie Highway. Intelligent Transportation System devices will be installed to improve traffic flow.