US Bridges

SR-A1A WB over Intracoastal Waterway

Fair

Miami-Dade County, Florida · Intracoastal Waterway · Structure no. 870771

Built
1996
29 years old, rebuilt 2013
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
2,468 ft
18 main spans
Daily traffic
39,000
2022 count
Owner
State
State Highway Agency

About this bridge

SR-A1A WB over Intracoastal Waterway is a prestressed concrete continuous stringer/multi-beam or girder carrying SR-A1A WB over Intracoastal Waterway in Miami-Dade County, Florida. It was built in 1996 and reconstructed in 2013, so it is 29 years old, younger 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 39,000 vehicles a day, roughly 6% of them trucks, projected to reach 67,665 by 2044. The structure is 2,468 ft (752.2 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSR-A1A WB
CrossesIntracoastal Waterway
LocationIntracoastal Waterway
RouteState Highway 0A1A
CountyMiami-Dade County
StateFlorida
Coordinates25.78746, -80.18209
Functional classUrban Other Principal 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans18
Design loadHL 93
Structure length2,468 ft (752.2 m)
Longest span145 ft (44.2 m)
Deck width80 ft (24.3 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic39,000 (2022)
Projected traffic67,665 by 2044
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
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 WB over Intracoastal Waterway built?

It was built in 1996, making it 29 years old in 2025. It was reconstructed in 2013.

What condition is SR-A1A WB 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 December 2023.

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

About 39,000 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR-A1A WB over Intracoastal Waterway?

The structure is 2,468 ft (752.2 m) long with a longest span of 145 ft (44.2 m) and a deck 80 ft wide.

Who owns SR-A1A WB over Intracoastal Waterway?

It is owned by the State Highway Agency.