US Bridges

SR-A1A over Intracoastal Waterway

Fair

Palm Beach County, Florida · 0.5 Mile East of US-1 · Structure no. 930269

Built
1976
49 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,976 ft
19 main spans
Daily traffic
21,800
2022 count
Owner
State
State Highway Agency

About this bridge

SR-A1A over Intracoastal Waterway is a prestressed concrete stringer/multi-beam or girder carrying SR-A1A over Intracoastal Waterway in Palm Beach County, Florida. It was built in 1976, so it is 49 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 21,800 vehicles a day, roughly 8% of them trucks, projected to reach 37,823 by 2042. The structure is 1,976 ft (602.3 m) long and 95 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesSR-A1A
CrossesIntracoastal Waterway
Location0.5 Mile East of US-1
RouteState Highway 0A1A
CountyPalm Beach County
StateFlorida
Coordinates26.78296, -80.0482
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
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 geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating20.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans19
Design loadHS 20 + Mod
Structure length1,976 ft (602.3 m)
Longest span129 ft (39.3 m)
Deck width95 ft (29.1 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,800 (2022)
Projected traffic37,823 by 2042
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 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 over Intracoastal Waterway built?

It was built in 1976, making it 49 years old in 2025.

What condition is SR-A1A over Intracoastal Waterway in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.

How much traffic does SR-A1A over Intracoastal Waterway carry?

About 21,800 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is SR-A1A over Intracoastal Waterway?

The structure is 1,976 ft (602.3 m) long with a longest span of 129 ft (39.3 m) and a deck 95 ft wide.

Who owns SR-A1A over Intracoastal Waterway?

It is owned by the State Highway Agency.