US Bridges

County Rd. 18 over I20

Fair

Cleburne County, Alabama · 3.5 MI E JCT SR 9 · Structure no. 010176

Built
1970
55 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
376 ft
4 main spans
Daily traffic
304
2023 count
Owner
State
State Highway Agency

About this bridge

County Rd. 18 over I20 is a steel continuous stringer/multi-beam or girder carrying County Rd. 18 over I20 in Cleburne County, Alabama. It was built in 1970, so it is 55 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 304 vehicles a day, roughly 2% of them trucks, projected to reach 425 by 2043. The structure is 376 ft (114.6 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty Rd. 18
CrossesI20
Location3.5 MI E JCT SR 9
RouteCounty Highway 18
CountyCleburne County
StateAlabama
Coordinates33.6339, -85.53875
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+1 approach)
Design loadHS 20
Structure length376 ft (114.6 m)
Longest span100 ft (30.5 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic304 (2023)
Projected traffic425 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$2.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Rd. 18 over I20 built?

It was built in 1970, making it 55 years old in 2025.

What condition is County Rd. 18 over I20 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 County Rd. 18 over I20 carry?

About 304 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is County Rd. 18 over I20?

The structure is 376 ft (114.6 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.

Who owns County Rd. 18 over I20?

It is owned by the State Highway Agency.