US Bridges

SR-21 over Mcgirts Creek

Fair

Duval County, Florida · 0.5 Mi. S. of I-295 · Structure no. 720457

Built
1965
60 years old, rebuilt 1976
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
197 ft
7 main spans
Daily traffic
78,000
2022 count
Owner
State
State Highway Agency

About this bridge

SR-21 over Mcgirts Creek is a concrete continuous slab carrying SR-21 over Mcgirts Creek in Duval County, Florida. It was built in 1965 and reconstructed in 1976, so it is 60 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 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 78,000 vehicles a day, roughly 4% of them trucks, projected to reach 135,330 by 2042. The structure is 197 ft (60 m) long and 138 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR-21
CrossesMcgirts Creek
Location0.5 Mi. S. of I-295
RouteState Highway 21
CountyDuval County
StateFlorida
Coordinates30.19103, -81.73929
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
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 rating37.1 US tons
Inventory rating28.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length197 ft (60 m)
Longest span28 ft (8.5 m)
Deck width138 ft (42.1 m)
Roadway width120 ft (36.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic78,000 (2022)
Projected traffic135,330 by 2042
Trucks4%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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-21 over Mcgirts Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1976.

What condition is SR-21 over Mcgirts Creek 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 November 2023.

How much traffic does SR-21 over Mcgirts Creek carry?

About 78,000 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is SR-21 over Mcgirts Creek?

The structure is 197 ft (60 m) long with a longest span of 28 ft (8.5 m) and a deck 138 ft wide.

Who owns SR-21 over Mcgirts Creek?

It is owned by the State Highway Agency.