US Bridges

US 84 / SR38 over Trib Big Slough

Good

Decatur County, Georgia · Inside City Limits of Bai · Structure no. 000000008750620

Built
1930
95 years old, rebuilt 1988
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
6,650
2024 count
Owner
State
State Highway Agency

About this bridge

US 84 / SR38 over Trib Big Slough is a concrete culvert carrying US 84 / SR38 over Trib Big Slough in Decatur County, Georgia. It was built in 1930 and reconstructed in 1988, so it is 95 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 6,650 vehicles a day, roughly 17% of them trucks, projected to reach 11,220 by 2032. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesUS 84 / SR38
CrossesTrib Big Slough
LocationInside City Limits of Bai
RouteU.S. Route 84
StateGeorgia
Coordinates30.90261, -84.53534
Functional classUrban Other Principal 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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
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 rating50.9 US tons
Inventory rating30 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length33 ft (10.1 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 traffic6,650 (2024)
Projected traffic11,220 by 2032
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$299,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 84 / SR38 over Trib Big Slough built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1988.

What condition is US 84 / SR38 over Trib Big Slough 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 October 2023.

How much traffic does US 84 / SR38 over Trib Big Slough carry?

About 6,650 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is US 84 / SR38 over Trib Big Slough?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns US 84 / SR38 over Trib Big Slough?

It is owned by the State Highway Agency.