US Bridges

SR 75 over Black Oak Creek

Fair

DeKalb County, Alabama · 6.3 MI S JCT SR 35 · Structure no. 002718

Built
1942
83 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
7,608
2023 count
Owner
State
State Highway Agency

About this bridge

SR 75 over Black Oak Creek is a concrete culvert carrying SR 75 over Black Oak Creek in DeKalb County, Alabama. It was built in 1942, so it is 83 years old, older 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 6 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 7,608 vehicles a day, roughly 5% of them trucks, projected to reach 10,651 by 2043. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 75
CrossesBlack Oak Creek
Location6.3 MI S JCT SR 35
RouteState Highway 75
CountyDeKalb County
StateAlabama
Coordinates34.43202, -85.92692
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.3 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,608 (2023)
Projected traffic10,651 by 2043
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 75 over Black Oak Creek built?

It was built in 1942, making it 83 years old in 2025.

What condition is SR 75 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 December 2024.

How much traffic does SR 75 over Black Oak Creek carry?

About 7,608 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 75 over Black Oak Creek?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns SR 75 over Black Oak Creek?

It is owned by the State Highway Agency.