US Bridges

ST Bunn over I-59

Fair

Tuscaloosa County, Alabama · 2.5 MI S JCT I-359 · Structure no. 010181

Built
1970
55 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
279 ft
4 main spans
Daily traffic
500
2010 count
Owner
State
State Highway Agency

About this bridge

ST Bunn over I-59 is a steel continuous stringer/multi-beam or girder carrying ST Bunn over I-59 in Tuscaloosa County, Alabama. It was built in 1970, so it is 55 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 500 vehicles a day, roughly 90% of them trucks, projected to reach 653 by 2030. The structure is 279 ft (85 m) long and 32 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesST Bunn
CrossesI-59
Location2.5 MI S JCT I-359
RouteCounty Highway 0
CountyTuscaloosa County
StateAlabama
Coordinates33.15533, -87.58805
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.7 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length279 ft (85 m)
Longest span83 ft (25.3 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2010)
Projected traffic653 by 2030
Trucks90%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed19.3 mi (31 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was ST Bunn over I-59 built?

It was built in 1970, making it 55 years old in 2025.

What condition is ST Bunn over I-59 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 January 2024.

How much traffic does ST Bunn over I-59 carry?

About 500 vehicles per day (2010 count), of which roughly 90% are trucks.

How long is ST Bunn over I-59?

The structure is 279 ft (85 m) long with a longest span of 83 ft (25.3 m) and a deck 32 ft wide.

Who owns ST Bunn over I-59?

It is owned by the State Highway Agency.