US Bridges

CR-30 over Swamp Creek

Fair

Coosa County, Alabama · 0.68 MI W Cottage Grove · Structure no. 011813

Built
1977
48 years old
Condition
Fair
inspected March 2023
Type
Channel Beam
Concrete
Length
38 ft
2 main spans
Daily traffic
428
2021 count
Owner
County
County Highway Agency

About this bridge

CR-30 over Swamp Creek is a concrete channel beam carrying CR-30 over Swamp Creek in Coosa County, Alabama. It was built in 1977, so it is 48 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 428 vehicles a day, roughly 1% of them trucks, projected to reach 442 by 2041. The structure is 38 ft (11.6 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCR-30
CrossesSwamp Creek
Location0.68 MI W Cottage Grove
RouteCounty Highway 30
CountyCoosa County
StateAlabama
Coordinates32.85623, -86.13448
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.3 US tons
Inventory rating37.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic428 (2021)
Projected traffic442 by 2041
Trucks1%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$387,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR-30 over Swamp Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is CR-30 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 2023.

How much traffic does CR-30 over Swamp Creek carry?

About 428 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is CR-30 over Swamp Creek?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns CR-30 over Swamp Creek?

It is owned by the County Highway Agency.