US Bridges

CO RD 20 over Swamp

Fair

Wilcox County, Alabama · 3.2KM from SR10 · Structure no. 016918

Built
1984
41 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
37 ft
3 main spans
Daily traffic
50
2016 count
Owner
County
County Highway Agency

About this bridge

CO RD 20 over Swamp is a concrete culvert carrying CO RD 20 over Swamp in Wilcox County, Alabama. It was built in 1984, so it is 41 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 50 vehicles a day, projected to reach 75 by 2036. The structure is 37 ft (11.3 m) long and 42 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCO RD 20
CrossesSwamp
Location3.2KM from SR10
RouteCounty Highway 20
CountyWilcox County
StateAlabama
Coordinates32.01025, -87.40592
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.4 US tons
Inventory rating45.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span12 ft (3.7 m)
Deck width42 ft (12.7 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2016)
Projected traffic75 by 2036
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$470,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD 20 over Swamp built?

It was built in 1984, making it 41 years old in 2025.

What condition is CO RD 20 over Swamp 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 October 2024.

How much traffic does CO RD 20 over Swamp carry?

About 50 vehicles per day (2016 count).

How long is CO RD 20 over Swamp?

The structure is 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m) and a deck 42 ft wide.

Who owns CO RD 20 over Swamp?

It is owned by the County Highway Agency.