US Bridges

I65 over Mariot Creek

Fair

Cullman County, Alabama · 4 MI N JCT SR 91 · Structure no. 006097

Built
1958
67 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
73 ft
5 main spans
Daily traffic
44,987
2022 count
Owner
State
State Highway Agency

About this bridge

I65 over Mariot Creek is a concrete culvert carrying I65 over Mariot Creek in Cullman County, Alabama. It was built in 1958, so it is 67 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 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 44,987 vehicles a day, roughly 26% of them trucks, projected to reach 62,982 by 2042. The structure is 73 ft (22.3 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesI65
CrossesMariot Creek
Location4 MI N JCT SR 91
RouteInterstate 65
CountyCullman County
StateAlabama
Coordinates33.99996, -86.86129
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.3 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length73 ft (22.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44,987 (2022)
Projected traffic62,982 by 2042
Trucks26%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I65 over Mariot Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is I65 over Mariot 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 2023.

How much traffic does I65 over Mariot Creek carry?

About 44,987 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is I65 over Mariot Creek?

The structure is 73 ft (22.3 m) long with a longest span of 12 ft (3.7 m).

Who owns I65 over Mariot Creek?

It is owned by the State Highway Agency.