US Bridges

4 Mile Post Road over Aldridge Creek

Fair

Madison County, Alabama · 1012 4 Mile Post Road · Structure no. 013332

Built
1984
41 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
40 ft
4 main spans
Daily traffic
8,800
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

4 Mile Post Road over Aldridge Creek is a concrete culvert carrying 4 Mile Post Road over Aldridge Creek in Madison County, Alabama. It was built in 1984, so it is 41 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 8,800 vehicles a day, roughly 1% of them trucks, projected to reach 12,320 by 2043. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries4 Mile Post Road
CrossesAldridge Creek
Location1012 4 Mile Post Road
RouteCity Street 0
CountyMadison County
StateAlabama
Coordinates34.67167, -86.55333
Functional classUrban Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.9 US tons
Inventory rating33.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,800 (2023)
Projected traffic12,320 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$576,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 4 Mile Post Road over Aldridge Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is 4 Mile Post Road over Aldridge 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 January 2024.

How much traffic does 4 Mile Post Road over Aldridge Creek carry?

About 8,800 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is 4 Mile Post Road over Aldridge Creek?

The structure is 40 ft (12.2 m) long with a longest span of 9 ft (2.7 m).

Who owns 4 Mile Post Road over Aldridge Creek?

It is owned by the City or Municipal Highway Agency.