US Bridges

SR-A1A WB over St. Lucie River

Good

Martin County, Florida · 2.6 Miles East of US-1 · Structure no. 890160

Built
2001
24 years old
Condition
Good
inspected June 2023
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
2,983 ft
17 main spans
Daily traffic
12,500
2022 count
Owner
State
State Highway Agency

About this bridge

SR-A1A WB over St. Lucie River is a prestressed concrete continuous segmental box girder carrying SR-A1A WB over St. Lucie River in Martin County, Florida. It was built in 2001, so it is 24 years old, younger than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,500 vehicles a day, roughly 5% of them trucks, projected to reach 21,688 by 2044. The structure is 2,983 ft (909.1 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR-A1A WB
CrossesSt. Lucie River
Location2.6 Miles East of US-1
RouteState Highway 0A1A
CountyMartin County
StateFlorida
Coordinates27.19899, -80.20789
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating40.7 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans17
Design loadHL 93
Structure length2,983 ft (909.1 m)
Longest span180 ft (55 m)
Deck width49 ft (15 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,500 (2022)
Projected traffic21,688 by 2044
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR-A1A WB over St. Lucie River built?

It was built in 2001, making it 24 years old in 2025.

What condition is SR-A1A WB over St. Lucie River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does SR-A1A WB over St. Lucie River carry?

About 12,500 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is SR-A1A WB over St. Lucie River?

The structure is 2,983 ft (909.1 m) long with a longest span of 180 ft (55 m) and a deck 49 ft wide.

Who owns SR-A1A WB over St. Lucie River?

It is owned by the State Highway Agency.