US Bridges

SR-A1A over Matanzas Inlet

Fair

St. Johns County, Florida · SR-A1A / Matanzas Inlet · Structure no. 780097

Built
1993
32 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
2,132 ft
30 main spans
Daily traffic
6,700
2023 count
Owner
State
State Highway Agency

About this bridge

SR-A1A over Matanzas Inlet is a prestressed concrete stringer/multi-beam or girder carrying SR-A1A over Matanzas Inlet in St. Johns County, Florida. It was built in 1993, so it is 32 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 6,700 vehicles a day, roughly 2% of them trucks, projected to reach 11,625 by 2045. The structure is 2,132 ft (649.8 m) long and 59 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesSR-A1A
CrossesMatanzas Inlet
LocationSR-A1A / Matanzas Inlet
RouteState Highway 0A1A
CountySt. Johns County
StateFlorida
Coordinates29.70591, -81.22826
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.7 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans30
Design loadHS 20 + Mod
Structure length2,132 ft (649.8 m)
Longest span73 ft (22.3 m)
Deck width59 ft (18 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,700 (2023)
Projected traffic11,625 by 2045
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed13 mi (21 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-A1A over Matanzas Inlet built?

It was built in 1993, making it 32 years old in 2025.

What condition is SR-A1A over Matanzas 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 June 2024.

How much traffic does SR-A1A over Matanzas Inlet carry?

About 6,700 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is SR-A1A over Matanzas Inlet?

The structure is 2,132 ft (649.8 m) long with a longest span of 73 ft (22.3 m) and a deck 59 ft wide.

Who owns SR-A1A over Matanzas Inlet?

It is owned by the State Highway Agency.