US Bridges

US-1 (SR-15) over Little Boggy Creek

Fair

Nassau County, Florida · 5 Mi. N. of Callahan · Structure no. 740057

Built
1960
65 years old, rebuilt 1989
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
16,200
2023 count
Owner
State
State Highway Agency

About this bridge

US-1 (SR-15) over Little Boggy Creek is a concrete culvert carrying US-1 (SR-15) over Little Boggy Creek in Nassau County, Florida. It was built in 1960 and reconstructed in 1989, so it is 65 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 16,200 vehicles a day, roughly 13% of them trucks, projected to reach 28,107 by 2045. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 24.2 mi (39 km).

CarriesUS-1 (SR-15)
CrossesLittle Boggy Creek
Location5 Mi. N. of Callahan
RouteU.S. Route 1
StateFlorida
Coordinates30.63448, -81.85693
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.5 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,200 (2023)
Projected traffic28,107 by 2045
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-1 (SR-15) over Little Boggy Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1989.

What condition is US-1 (SR-15) over Little Boggy 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 2024.

How much traffic does US-1 (SR-15) over Little Boggy Creek carry?

About 16,200 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is US-1 (SR-15) over Little Boggy Creek?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).

Who owns US-1 (SR-15) over Little Boggy Creek?

It is owned by the State Highway Agency.