US Bridges

SR-A1A (ocean Dr.) over Big Mud Creek

Poor

St. Lucie County, Florida · 0.23 MI N Fpl Power Plant · Structure no. 940003

Built
1965
60 years old, rebuilt 2009
Condition
Poor
inspected December 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
3,800
2022 count
Owner
State
State Highway Agency

About this bridge

SR-A1A (ocean Dr.) over Big Mud Creek is a concrete slab carrying SR-A1A (ocean Dr.) over Big Mud Creek in St. Lucie County, Florida. It was built in 1965 and reconstructed in 2009, so it is 60 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,800 vehicles a day, roughly 6% of them trucks, projected to reach 6,593 by 2044. The structure is 23 ft (7 m) long and 49 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR-A1A (ocean Dr.)
CrossesBig Mud Creek
Location0.23 MI N Fpl Power Plant
RouteState Highway 0A1A
CountySt. Lucie County
StateFlorida
Coordinates27.35458, -80.24583
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.2 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width49 ft (14.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2022)
Projected traffic6,593 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-A1A (ocean Dr.) over Big Mud Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2009.

What condition is SR-A1A (ocean Dr.) over Big Mud Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does SR-A1A (ocean Dr.) over Big Mud Creek carry?

About 3,800 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR-A1A (ocean Dr.) over Big Mud Creek?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 49 ft wide.

Who owns SR-A1A (ocean Dr.) over Big Mud Creek?

It is owned by the State Highway Agency.