US Bridges

CR-18 over Swamp Creek

Fair

Coosa County, Alabama · 2.84 Miles NW of CR-14 · Structure no. 015161

Built
1991
34 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
58 ft
4 main spans
Daily traffic
159
2022 count
Owner
County
County Highway Agency

About this bridge

CR-18 over Swamp Creek is a concrete culvert carrying CR-18 over Swamp Creek in Coosa County, Alabama. It was built in 1991, so it is 34 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 5 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 159 vehicles a day, roughly 3% of them trucks, projected to reach 236 by 2042. The structure is 58 ft (17.8 m) long. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesCR-18
CrossesSwamp Creek
Location2.84 Miles NW of CR-14
RouteCounty Highway 18
CountyCoosa County
StateAlabama
Coordinates32.8276, -86.16526
Functional classRural Major 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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69.4 US tons
Inventory rating57.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length58 ft (17.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic159 (2022)
Projected traffic236 by 2042
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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$788,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR-18 over Swamp Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is CR-18 over Swamp 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 March 2024.

How much traffic does CR-18 over Swamp Creek carry?

About 159 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is CR-18 over Swamp Creek?

The structure is 58 ft (17.8 m) long with a longest span of 14 ft (4.3 m).

Who owns CR-18 over Swamp Creek?

It is owned by the County Highway Agency.