US Bridges

CO Rt 76 over Black Oak Creek

Fair

DeKalb County, Alabama · .5MI N Blackoak CH.T7SR6E · Structure no. 011471

Built
1975
50 years old
Condition
Fair
inspected September 2023
Type
Channel Beam
Concrete
Length
72 ft
3 main spans
Daily traffic
213
2023 count
Owner
County
County Highway Agency

About this bridge

CO Rt 76 over Black Oak Creek is a concrete channel beam carrying CO Rt 76 over Black Oak Creek in DeKalb County, Alabama. It was built in 1975, so it is 50 years old, younger than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 213 vehicles a day, roughly 5% of them trucks, projected to reach 317 by 2043. The structure is 72 ft (21.9 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCO Rt 76
CrossesBlack Oak Creek
Location.5MI N Blackoak CH.T7SR6E
RouteCounty Highway 76
StateAlabama
Coordinates34.43466, -86.03022
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.4 US tons
Inventory rating32 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span24 ft (7.3 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic213 (2023)
Projected traffic317 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$564,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO Rt 76 over Black Oak Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is CO Rt 76 over Black Oak Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does CO Rt 76 over Black Oak Creek carry?

About 213 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is CO Rt 76 over Black Oak Creek?

The structure is 72 ft (21.9 m) long with a longest span of 24 ft (7.3 m) and a deck 25 ft wide.

Who owns CO Rt 76 over Black Oak Creek?

It is owned by the County Highway Agency.