US Bridges

SR-A1A (ocean Bld) over Intracoastal Waterway

Good

Martin County, Florida · 4.0 Miles East of US-1 · Structure no. 890150

Built
2006
19 years old
Condition
Good
inspected May 2023
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
4,661 ft
31 main spans
Daily traffic
15,700
2022 count
Owner
State
State Highway Agency

About this bridge

SR-A1A (ocean Bld) over Intracoastal Waterway is a prestressed concrete continuous segmental box girder carrying SR-A1A (ocean Bld) over Intracoastal Waterway in Martin County, Florida. It was built in 2006, so it is 19 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 15,700 vehicles a day, roughly 7% of them trucks, projected to reach 27,240 by 2044. The structure is 4,661 ft (1,420.7 m) long and 61 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR-A1A (ocean Bld)
CrossesIntracoastal Waterway
Location4.0 Miles East of US-1
RouteState Highway 0A1A
CountyMartin County
StateFlorida
Coordinates27.20667, -80.19167
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51.8 US tons
Inventory rating43.5 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans31
Design loadHL 93
Structure length4,661 ft (1,420.7 m)
Longest span152 ft (46.4 m)
Deck width61 ft (18.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,700 (2022)
Projected traffic27,240 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 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 (ocean Bld) over Intracoastal Waterway built?

It was built in 2006, making it 19 years old in 2025.

What condition is SR-A1A (ocean Bld) over Intracoastal Waterway 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 May 2023.

How much traffic does SR-A1A (ocean Bld) over Intracoastal Waterway carry?

About 15,700 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR-A1A (ocean Bld) over Intracoastal Waterway?

The structure is 4,661 ft (1,420.7 m) long with a longest span of 152 ft (46.4 m) and a deck 61 ft wide.

Who owns SR-A1A (ocean Bld) over Intracoastal Waterway?

It is owned by the State Highway Agency.