US Bridges

Windmill RD C.R.20 over Prairie Creek

FairPosted for load

Perry County, Alabama · Windmill RD · Structure no. 007591

Built
1962
63 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
238 ft
7 main spans
Daily traffic
150
1993 count
Owner
County
County Highway Agency

About this bridge

Windmill RD C.R.20 over Prairie Creek is a concrete tee beam carrying Windmill RD C.R.20 over Prairie Creek in Perry County, Alabama. It was built in 1962, so it is 63 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. Its operating status is: posted for load restriction.

It carries about 150 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2033. The structure is 238 ft (72.5 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesWindmill RD C.R.20
CrossesPrairie Creek
LocationWindmill RD
RouteCounty Highway 20
CountyPerry County
StateAlabama
Coordinates32.58269, -87.52074
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.1 US tons
Inventory rating27.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 15
Structure length238 ft (72.5 m)
Longest span34 ft (10.4 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (1993)
Projected traffic160 by 2033
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Windmill RD C.R.20 over Prairie Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is Windmill RD C.R.20 over Prairie 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 September 2023.

How much traffic does Windmill RD C.R.20 over Prairie Creek carry?

About 150 vehicles per day (1993 count), of which roughly 5% are trucks.

How long is Windmill RD C.R.20 over Prairie Creek?

The structure is 238 ft (72.5 m) long with a longest span of 34 ft (10.4 m) and a deck 25 ft wide.

Who owns Windmill RD C.R.20 over Prairie Creek?

It is owned by the County Highway Agency.