US Bridges

County RD 20 over Limestone Creek

FairPosted for load

Covington County, Alabama · CR 20 · Structure no. 007831

Built
1963
62 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
259 ft
1 main span
Daily traffic
270
1994 count
Owner
County
County Highway Agency

About this bridge

County RD 20 over Limestone Creek is a steel stringer/multi-beam or girder carrying County RD 20 over Limestone Creek in Covington County, Alabama. It was built in 1963, so it is 62 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 5 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 270 vehicles a day, roughly 5% of them trucks, projected to reach 351 by 2030. The structure is 259 ft (78.9 m) long and 23 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesCounty RD 20
CrossesLimestone Creek
LocationCR 20
RouteCounty Highway 20
CountyCovington County
StateAlabama
Coordinates31.12202, -86.37836
Functional classRural Minor Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.9 US tons
Inventory rating25.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+6 approach)
Design loadH 15
Structure length259 ft (78.9 m)
Longest span55 ft (16.8 m)
Deck width23 ft (7.1 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic270 (1994)
Projected traffic351 by 2030
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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$1.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 20 over Limestone Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is County RD 20 over Limestone 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 December 2024.

How much traffic does County RD 20 over Limestone Creek carry?

About 270 vehicles per day (1994 count), of which roughly 5% are trucks.

How long is County RD 20 over Limestone Creek?

The structure is 259 ft (78.9 m) long with a longest span of 55 ft (16.8 m) and a deck 23 ft wide.

Who owns County RD 20 over Limestone Creek?

It is owned by the County Highway Agency.