US Bridges

A1A over Boca Inlet

Fair

Palm Beach County, Florida · 1.2 MI N Broward Cnty · Structure no. 930060

Built
1963
62 years old
Condition
Fair
inspected May 2024
Type
Movable - Bascule
Steel
Length
540 ft
1 main span
Daily traffic
11,300
2024 count
Owner
State
State Highway Agency

About this bridge

A1A over Boca Inlet is a steel movable - bascule carrying A1A over Boca Inlet in Palm Beach County, Florida. It was built in 1963, so it is 62 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 5 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 11,300 vehicles a day, roughly 8% of them trucks, projected to reach 19,606 by 2044. The structure is 540 ft (164.6 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesA1A
CrossesBoca Inlet
Location1.2 MI N Broward Cnty
RouteState Highway 0A1A
CountyPalm Beach County
StateFlorida
Coordinates26.3391, -80.07249
Functional classUrban Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating42.1 US tons
Inventory rating25.2 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+11 approach)
Design loadHS 20 + Mod
Structure length540 ft (164.6 m)
Longest span80 ft (24.4 m)
Deck width39 ft (11.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck18 ft (5.4 m)

Traffic and service

Average daily traffic11,300 (2024)
Projected traffic19,606 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 A1A over Boca Inlet built?

It was built in 1963, making it 62 years old in 2025.

What condition is A1A over Boca Inlet 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 May 2024.

How much traffic does A1A over Boca Inlet carry?

About 11,300 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is A1A over Boca Inlet?

The structure is 540 ft (164.6 m) long with a longest span of 80 ft (24.4 m) and a deck 39 ft wide.

Who owns A1A over Boca Inlet?

It is owned by the State Highway Agency.