US Bridges

Black Diamond Rd. over Warwoman Creek

GoodPosted for load

Rabun County, Georgia · 6 MI E of Clayton · Structure no. 000000024150680

Built
1990
35 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
126
2024 count
Owner
County
County Highway Agency

About this bridge

Black Diamond Rd. over Warwoman Creek is a steel stringer/multi-beam or girder carrying Black Diamond Rd. over Warwoman Creek in Rabun County, Georgia. It was built in 1990, so it is 35 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. Its operating status is: posted for load restriction.

It carries about 126 vehicles a day, roughly 1% of them trucks, projected to reach 900 by 2031. The structure is 33 ft (10.1 m) long and 14 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesBlack Diamond Rd.
CrossesWarwoman Creek
Location6 MI E of Clayton
RouteCounty Highway 258
StateGeorgia
Coordinates34.88798, -83.29228
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating34 US tons
Inventory rating20 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span33 ft (10.1 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (3.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic126 (2024)
Projected traffic900 by 2031
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$141,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Black Diamond Rd. over Warwoman Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is Black Diamond Rd. over Warwoman 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 June 2024.

How much traffic does Black Diamond Rd. over Warwoman Creek carry?

About 126 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Black Diamond Rd. over Warwoman Creek?

The structure is 33 ft (10.1 m) long with a longest span of 33 ft (10.1 m) and a deck 14 ft wide.

Who owns Black Diamond Rd. over Warwoman Creek?

It is owned by the County Highway Agency.