US Bridges

Black Isle Road over Black Isle Creek

Good

McIntosh County, Georgia · City Limits of Darien · Structure no. 000000019150110

Built
2008
17 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete
Length
180 ft
9 main spans
Daily traffic
120
2024 count
Owner
County
County Highway Agency

About this bridge

Black Isle Road over Black Isle Creek is a concrete slab carrying Black Isle Road over Black Isle Creek in McIntosh County, Georgia. It was built in 2008, so it is 17 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 120 vehicles a day, roughly 1% of them trucks, projected to reach 225 by 2031. The structure is 180 ft (54.9 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesBlack Isle Road
CrossesBlack Isle Creek
LocationCity Limits of Darien
RouteCounty Highway 215
StateGeorgia
Coordinates31.36956, -81.41194
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43 US tons
Inventory rating26.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans9
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span20 ft (6.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2024)
Projected traffic225 by 2031
Trucks1%
Lanes on structure2
Traffic directionTwo-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$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Black Isle Road over Black Isle Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Black Isle Road over Black Isle 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 April 2024.

How much traffic does Black Isle Road over Black Isle Creek carry?

About 120 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Black Isle Road over Black Isle Creek?

The structure is 180 ft (54.9 m) long with a longest span of 20 ft (6.1 m) and a deck 27 ft wide.

Who owns Black Isle Road over Black Isle Creek?

It is owned by the County Highway Agency.