US Bridges

CR 231 over Mud Swamp

Good

Bradford County, Florida · 2.4 MI SW of CR 18 · Structure no. 280021

Built
1968
57 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
28 ft
3 main spans
Daily traffic
201
2023 count
Owner
County
County Highway Agency

About this bridge

CR 231 over Mud Swamp is a concrete culvert carrying CR 231 over Mud Swamp in Bradford County, Florida. It was built in 1968, so it is 57 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 201 vehicles a day, roughly 5% of them trucks, projected to reach 349 by 2042. The structure is 28 ft (8.6 m) long.

CarriesCR 231
CrossesMud Swamp
Location2.4 MI SW of CR 18
RouteCounty Highway 231
StateFlorida
Coordinates29.86194, -82.28361
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.4 US tons
Inventory rating48.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length28 ft (8.6 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic201 (2023)
Projected traffic349 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 231 over Mud Swamp built?

It was built in 1968, making it 57 years old in 2025.

What condition is CR 231 over Mud Swamp in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does CR 231 over Mud Swamp carry?

About 201 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is CR 231 over Mud Swamp?

The structure is 28 ft (8.6 m) long with a longest span of 10 ft (3 m).

Who owns CR 231 over Mud Swamp?

It is owned by the County Highway Agency.