US Bridges

Colerain-St. Marys over Gum Branch

Good

Camden County, Georgia · 5 MI E of Kingsland · Structure no. 000000003900550

Built
1983
42 years old, rebuilt 2010
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
15,500
2024 count
Owner
County
County Highway Agency

About this bridge

Colerain-St. Marys over Gum Branch is a concrete culvert carrying Colerain-St. Marys over Gum Branch in Camden County, Georgia. It was built in 1983 and reconstructed in 2010, so it is 42 years old, younger 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 15,500 vehicles a day, roughly 1% of them trucks, projected to reach 15,915 by 2032. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesColerain-St. Marys
CrossesGum Branch
Location5 MI E of Kingsland
RouteCounty Highway 2936
StateGeorgia
Coordinates30.81239, -81.62707
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionMay 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 rating50.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length29 ft (8.8 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,500 (2024)
Projected traffic15,915 by 2032
Trucks1%
Lanes on structure4
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 proposedNone recorded
Estimated improvement cost$263,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Colerain-St. Marys over Gum Branch built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 2010.

What condition is Colerain-St. Marys over Gum Branch 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 May 2023.

How much traffic does Colerain-St. Marys over Gum Branch carry?

About 15,500 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Colerain-St. Marys over Gum Branch?

The structure is 29 ft (8.8 m) long with a longest span of 9 ft (2.7 m).

Who owns Colerain-St. Marys over Gum Branch?

It is owned by the County Highway Agency.