US Bridges

Mars Hill Ch Road over Black Lake Trib

Good

Decatur County, Georgia · 11 MI NE of Bainbridge · Structure no. 000000008750090

Built
1989
36 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
52 ft
5 main spans
Daily traffic
370
2024 count
Owner
County
County Highway Agency

About this bridge

Mars Hill Ch Road over Black Lake Trib is a concrete culvert carrying Mars Hill Ch Road over Black Lake Trib in Decatur County, Georgia. It was built in 1989, so it is 36 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 370 vehicles a day, roughly 1% of them trucks, projected to reach 735 by 2032. The structure is 52 ft (15.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMars Hill Ch Road
CrossesBlack Lake Trib
Location11 MI NE of Bainbridge
RouteCounty Highway 60
StateGeorgia
Coordinates30.99054, -84.40135
Functional classRural Minor Collector

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 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating61 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20 + Mod
Structure length52 ft (15.8 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 traffic370 (2024)
Projected traffic735 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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$305,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mars Hill Ch Road over Black Lake Trib built?

It was built in 1989, making it 36 years old in 2025.

What condition is Mars Hill Ch Road over Black Lake Trib 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 Mars Hill Ch Road over Black Lake Trib carry?

About 370 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Mars Hill Ch Road over Black Lake Trib?

The structure is 52 ft (15.8 m) long with a longest span of 9 ft (2.7 m).

Who owns Mars Hill Ch Road over Black Lake Trib?

It is owned by the County Highway Agency.