US Bridges

County Road 83 over Lightwood Knot Creek

Fair

Crenshaw County, Alabama · Morgan Mill Rd. · Structure no. 008409

Built
1964
61 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
55 ft
5 main spans
Daily traffic
160
1993 count
Owner
County
County Highway Agency

About this bridge

County Road 83 over Lightwood Knot Creek is a concrete culvert carrying County Road 83 over Lightwood Knot Creek in Crenshaw County, Alabama. It was built in 1964, so it is 61 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.

It carries about 160 vehicles a day, roughly 4% of them trucks, projected to reach 176 by 2034. The structure is 55 ft (16.8 m) long and 46 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCounty Road 83
CrossesLightwood Knot Creek
LocationMorgan Mill Rd.
RouteCounty Highway 83
CountyCrenshaw County
StateAlabama
Coordinates31.48992, -86.21698
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 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 alignment6: Equal to present minimum criteria
Operating rating40.8 US tons
Inventory rating24.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadH 10
Structure length55 ft (16.8 m)
Longest span10 ft (3 m)
Deck width46 ft (14 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (1993)
Projected traffic176 by 2034
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$693,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 83 over Lightwood Knot Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is County Road 83 over Lightwood Knot 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 County Road 83 over Lightwood Knot Creek carry?

About 160 vehicles per day (1993 count), of which roughly 4% are trucks.

How long is County Road 83 over Lightwood Knot Creek?

The structure is 55 ft (16.8 m) long with a longest span of 10 ft (3 m) and a deck 46 ft wide.

Who owns County Road 83 over Lightwood Knot Creek?

It is owned by the County Highway Agency.