US Bridges

Mud Bridge Road over Flint River Trib

Fair

Spalding County, Georgia · 6.5 MI NW of Griffin · Structure no. 000000025550310

Built
1956
69 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete
Length
40 ft
2 main spans
Daily traffic
158
2024 count
Owner
County
County Highway Agency

About this bridge

Mud Bridge Road over Flint River Trib is a concrete slab carrying Mud Bridge Road over Flint River Trib in Spalding County, Georgia. It was built in 1956, so it is 69 years old, older than the Georgia average of 47.5 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 158 vehicles a day, roughly 1% of them trucks, projected to reach 165 by 2031. The structure is 40 ft (12.2 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMud Bridge Road
CrossesFlint River Trib
Location6.5 MI NW of Griffin
RouteCounty Highway 177
StateGeorgia
Coordinates33.33178, -84.36693
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
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
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating51.9 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length40 ft (12.2 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic158 (2024)
Projected traffic165 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$234,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mud Bridge Road over Flint River Trib built?

It was built in 1956, making it 69 years old in 2025.

What condition is Mud Bridge Road over Flint River Trib 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 Mud Bridge Road over Flint River Trib carry?

About 158 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Mud Bridge Road over Flint River Trib?

The structure is 40 ft (12.2 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns Mud Bridge Road over Flint River Trib?

It is owned by the County Highway Agency.