US Bridges

US 431; SR 1 over Flint River (mc)

Fair

Madison County, Alabama · JCT Flint River · Structure no. 005770

Built
1957
68 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
263 ft
3 main spans
Daily traffic
11,225
2023 count
Owner
State
State Highway Agency

About this bridge

US 431; SR 1 over Flint River (mc) is a steel continuous stringer/multi-beam or girder carrying US 431; SR 1 over Flint River (mc) in Madison County, Alabama. It was built in 1957, so it is 68 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 11,225 vehicles a day, roughly 8% of them trucks, projected to reach 15,715 by 2043. The structure is 263 ft (80.2 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 431; SR 1
CrossesFlint River (mc)
LocationJCT Flint River
RouteU.S. Route 431
CountyMadison County
StateAlabama
Coordinates34.63833, -86.46833
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.8 US tons
Inventory rating33.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length263 ft (80.2 m)
Longest span100 ft (30.5 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,225 (2023)
Projected traffic15,715 by 2043
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.2 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 431; SR 1 over Flint River (mc) built?

It was built in 1957, making it 68 years old in 2025.

What condition is US 431; SR 1 over Flint River (mc) 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 November 2024.

How much traffic does US 431; SR 1 over Flint River (mc) carry?

About 11,225 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 431; SR 1 over Flint River (mc)?

The structure is 263 ft (80.2 m) long with a longest span of 100 ft (30.5 m) and a deck 33 ft wide.

Who owns US 431; SR 1 over Flint River (mc)?

It is owned by the State Highway Agency.