US Bridges

SR 81 over Big Flat Creek

Good

Walton County, Georgia · 1 MI NW of Loganville · Structure no. 000000029700200

Built
1950
75 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
9,840
2024 count
Owner
State
State Highway Agency

About this bridge

SR 81 over Big Flat Creek is a concrete culvert carrying SR 81 over Big Flat Creek in Walton County, Georgia. It was built in 1950, so it is 75 years old, older than the Georgia average of 47.5 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 9,840 vehicles a day, roughly 1% of them trucks, projected to reach 14,805 by 2032. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR 81
CrossesBig Flat Creek
Location1 MI NW of Loganville
RouteState Highway 81
StateGeorgia
Coordinates33.84849, -83.8947
Functional classUrban Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 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 rating65.9 US tons
Inventory rating39.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length24 ft (7.3 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,840 (2024)
Projected traffic14,805 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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$141,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 81 over Big Flat Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is SR 81 over Big Flat Creek 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 August 2023.

How much traffic does SR 81 over Big Flat Creek carry?

About 9,840 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SR 81 over Big Flat Creek?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.4 m).

Who owns SR 81 over Big Flat Creek?

It is owned by the State Highway Agency.