US Bridges

US-1 SB (SR-15) over Little Trout River

Fair

Duval County, Florida · US-1 over Ltl.Trout River · Structure no. 720017

Built
1939
86 years old, rebuilt 1982
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
132 ft
6 main spans
Daily traffic
16,000
2023 count
Owner
State
State Highway Agency

About this bridge

US-1 SB (SR-15) over Little Trout River is a concrete tee beam carrying US-1 SB (SR-15) over Little Trout River in Duval County, Florida. It was built in 1939 and reconstructed in 1982, so it is 86 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 16,000 vehicles a day, roughly 11% of them trucks, projected to reach 27,760 by 2045. The structure is 132 ft (40.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS-1 SB (SR-15)
CrossesLittle Trout River
LocationUS-1 over Ltl.Trout River
RouteU.S. Route 1
StateFlorida
Coordinates30.43826, -81.76356
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 protection7 GoodSome minor problems.
Last inspectionAugust 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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating33.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length132 ft (40.2 m)
Longest span22 ft (6.7 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2023)
Projected traffic27,760 by 2045
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-1 SB (SR-15) over Little Trout River built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1982.

What condition is US-1 SB (SR-15) over Little Trout River 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 August 2024.

How much traffic does US-1 SB (SR-15) over Little Trout River carry?

About 16,000 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US-1 SB (SR-15) over Little Trout River?

The structure is 132 ft (40.2 m) long with a longest span of 22 ft (6.7 m) and a deck 43 ft wide.

Who owns US-1 SB (SR-15) over Little Trout River?

It is owned by the State Highway Agency.