US Bridges

Alliance Road over Coal Creek

Good

Jefferson County, Alabama · 1.5 MI SW Al 269 · Structure no. 016468

Built
1950
75 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
2,365
2025 count
Owner
County
County Highway Agency

About this bridge

Alliance Road over Coal Creek is a concrete continuous culvert carrying Alliance Road over Coal Creek in Jefferson County, Alabama. It was built in 1950, so it is 75 years old, older than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,365 vehicles a day, roughly 10% of them trucks, projected to reach 3,250 by 2045. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 11.2 mi (18 km).

CarriesAlliance Road
CrossesCoal Creek
Location1.5 MI SW Al 269
RouteCounty Highway 817
StateAlabama
Coordinates33.58656, -87.14783
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating98 US tons
Inventory rating64.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,365 (2025)
Projected traffic3,250 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$287,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Alliance Road over Coal Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Alliance Road over Coal Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Alliance Road over Coal Creek carry?

About 2,365 vehicles per day (2025 count), of which roughly 10% are trucks.

How long is Alliance Road over Coal Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns Alliance Road over Coal Creek?

It is owned by the County Highway Agency.