US Bridges

Davidson Road over Mill Creek

Fair

Blount County, Alabama · 1 MI North of Allgood · Structure no. 013717

Built
1985
40 years old
Condition
Fair
inspected November 2024
Type
Culvert
Prestressed Concrete
Length
52 ft
4 main spans
Daily traffic
32
2024 count
Owner
County
County Highway Agency

About this bridge

Davidson Road over Mill Creek is a prestressed concrete culvert carrying Davidson Road over Mill Creek in Blount County, Alabama. It was built in 1985, so it is 40 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 32 vehicles a day, projected to reach 48 by 2044. The structure is 52 ft (15.8 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesDavidson Road
CrossesMill Creek
Location1 MI North of Allgood
RouteCounty Highway 448
CountyBlount County
StateAlabama
Coordinates33.91946, -86.52707
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating84.5 US tons
Inventory rating50.7 US tons

Structure

Structure typeCulvert
MaterialPrestressed Concrete
DeckNot applicable
Main spans4
Design loadH 20
Structure length52 ft (15.8 m)
Longest span10 ft (3 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2024)
Projected traffic48 by 2044
Trucks0%
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

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 Davidson Road over Mill Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Davidson Road over Mill 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 November 2024.

How much traffic does Davidson Road over Mill Creek carry?

About 32 vehicles per day (2024 count).

How long is Davidson Road over Mill Creek?

The structure is 52 ft (15.8 m) long with a longest span of 10 ft (3 m) and a deck 20 ft wide.

Who owns Davidson Road over Mill Creek?

It is owned by the County Highway Agency.