US Bridges

Road 24 over Unknown Creek

FairPosted for load

Baker County, Florida · John Bethea State Forest · Structure no. 270074

Built
1952
73 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete
Length
45 ft
3 main spans
Daily traffic
11
2024 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Road 24 over Unknown Creek is a concrete slab carrying Road 24 over Unknown Creek in Baker County, Florida. It was built in 1952, so it is 73 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 11 vehicles a day, projected to reach 19 by 2042. The structure is 45 ft (13.6 m) long and 12 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRoad 24
CrossesUnknown Creek
LocationJohn Bethea State Forest
RouteState Lands Road 0
CountyBaker County
StateFlorida
Coordinates30.46139, -82.34806
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating12.7 US tons
Inventory rating7.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadUnknown
Structure length45 ft (13.6 m)
Longest span15 ft (4.5 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2024)
Projected traffic19 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Road 24 over Unknown Creek built?

It was built in 1952, making it 73 years old in 2025.

What condition is Road 24 over Unknown 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 February 2024.

How much traffic does Road 24 over Unknown Creek carry?

About 11 vehicles per day (2024 count).

How long is Road 24 over Unknown Creek?

The structure is 45 ft (13.6 m) long with a longest span of 15 ft (4.5 m) and a deck 12 ft wide.

Who owns Road 24 over Unknown Creek?

It is owned by the State Park, Forest, or Reservation Agency.