US Bridges

US 431 over I-85

Fair

Lee County, Alabama · JCT US 431 * I-85 · Structure no. 014830

Built
1989
36 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
284 ft
4 main spans
Daily traffic
8,530
2013 count
Owner
State
State Highway Agency

About this bridge

US 431 over I-85 is a prestressed concrete continuous stringer/multi-beam or girder carrying US 431 over I-85 in Lee County, Alabama. It was built in 1989, so it is 36 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 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 8,530 vehicles a day, roughly 8% of them trucks, projected to reach 11,044 by 2033. The structure is 284 ft (86.6 m) long and 83 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS 431
CrossesI-85
LocationJCT US 431 * I-85
RouteU.S. Route 431
CountyLee County
StateAlabama
Coordinates32.64372, -85.35228
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.7 US tons
Inventory rating31.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length284 ft (86.6 m)
Longest span78 ft (23.8 m)
Deck width83 ft (25.2 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,530 (2013)
Projected traffic11,044 by 2033
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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$6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 431 over I-85 built?

It was built in 1989, making it 36 years old in 2025.

What condition is US 431 over I-85 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 US 431 over I-85 carry?

About 8,530 vehicles per day (2013 count), of which roughly 8% are trucks.

How long is US 431 over I-85?

The structure is 284 ft (86.6 m) long with a longest span of 78 ft (23.8 m) and a deck 83 ft wide.

Who owns US 431 over I-85?

It is owned by the State Highway Agency.