US Bridges

US231; US431; SR1 over Norfolk Southern

Fair

Madison County, Alabama · 0.6 MI N JCT US231 *431 · Structure no. 015407

Built
1991
34 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
430 ft
4 main spans
Daily traffic
63,677
2022 count
Owner
State
State Highway Agency

About this bridge

US231; US431; SR1 over Norfolk Southern is a steel stringer/multi-beam or girder carrying US231; US431; SR1 over Norfolk Southern in Madison County, Alabama. It was built in 1991, so it is 34 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 63,677 vehicles a day, roughly 6% of them trucks, projected to reach 89,147 by 2042. The structure is 430 ft (131.1 m) long and 79 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUS231; US431; SR1
CrossesNorfolk Southern
Location0.6 MI N JCT US231 *431
RouteU.S. Route 231
CountyMadison County
StateAlabama
Coordinates34.73, -86.59833
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length430 ft (131.1 m)
Longest span144 ft (43.9 m)
Deck width79 ft (24 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63,677 (2022)
Projected traffic89,147 by 2042
Trucks6%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 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$8.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US231; US431; SR1 over Norfolk Southern built?

It was built in 1991, making it 34 years old in 2025.

What condition is US231; US431; SR1 over Norfolk Southern 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 October 2023.

How much traffic does US231; US431; SR1 over Norfolk Southern carry?

About 63,677 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is US231; US431; SR1 over Norfolk Southern?

The structure is 430 ft (131.1 m) long with a longest span of 144 ft (43.9 m) and a deck 79 ft wide.

Who owns US231; US431; SR1 over Norfolk Southern?

It is owned by the State Highway Agency.