US Bridges

SR A1A over Lake Worth Lagoon

Good

Palm Beach County, Florida · 0.2 MI E of SR5 on SRA1A · Structure no. 930547

Built
2016
9 years old
Condition
Good
inspected October 2023
Type
Movable - Bascule
Steel
Length
1,694 ft
1 main span
Daily traffic
17,909
2023 count
Owner
State
State Highway Agency

About this bridge

SR A1A over Lake Worth Lagoon is a steel movable - bascule carrying SR A1A over Lake Worth Lagoon in Palm Beach County, Florida. It was built in 2016, so it is 9 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 17,909 vehicles a day, roughly 4% of them trucks, projected to reach 31,072 by 2042. The structure is 1,694 ft (516.3 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSR A1A
CrossesLake Worth Lagoon
Location0.2 MI E of SR5 on SRA1A
RouteState Highway 0A1A
CountyPalm Beach County
StateFlorida
Coordinates26.71822, -80.04344
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.7 US tons
Inventory rating48.6 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+10 approach)
Design loadHL 93
Structure length1,694 ft (516.3 m)
Longest span214 ft (65.2 m)
Deck width100 ft (30.6 m)
Roadway width79 ft (24.2 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic17,909 (2023)
Projected traffic31,072 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Lake Worth Lagoon built?

It was built in 2016, making it 9 years old in 2025.

What condition is SR A1A over Lake Worth Lagoon 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 October 2023.

How much traffic does SR A1A over Lake Worth Lagoon carry?

About 17,909 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR A1A over Lake Worth Lagoon?

The structure is 1,694 ft (516.3 m) long with a longest span of 214 ft (65.2 m) and a deck 100 ft wide.

Who owns SR A1A over Lake Worth Lagoon?

It is owned by the State Highway Agency.