US Bridges

I-65 over Cobb Creek

Fair

Chilton County, Alabama · 4.3 MI S Shelby CO Line · Structure no. 006797

Built
1960
65 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
43 ft
3 main spans
Daily traffic
19,495
2013 count
Owner
State
State Highway Agency

About this bridge

I-65 over Cobb Creek is a concrete culvert carrying I-65 over Cobb Creek in Chilton County, Alabama. It was built in 1960, so it is 65 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 19,495 vehicles a day, roughly 22% of them trucks, projected to reach 29,243 by 2043. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesI-65
CrossesCobb Creek
Location4.3 MI S Shelby CO Line
RouteInterstate 65
CountyChilton County
StateAlabama
Coordinates33.00973, -86.70988
Functional classRural Principal Arterial - Interstate

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98 US tons
Inventory rating85 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span14 ft (4.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,495 (2013)
Projected traffic29,243 by 2043
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$857,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-65 over Cobb Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is I-65 over Cobb 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 July 2023.

How much traffic does I-65 over Cobb Creek carry?

About 19,495 vehicles per day (2013 count), of which roughly 22% are trucks.

How long is I-65 over Cobb Creek?

The structure is 43 ft (13.1 m) long with a longest span of 14 ft (4.2 m).

Who owns I-65 over Cobb Creek?

It is owned by the State Highway Agency.