US Bridges

CO Rt 12 over Trib. to Chastain Creek

Fair

DeKalb County, Alabama · 1.5 MI S Al 68 T9SR6E · Structure no. 010562

Built
1971
54 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
20 ft
1 main span
Daily traffic
153
2023 count
Owner
County
County Highway Agency

About this bridge

CO Rt 12 over Trib. to Chastain Creek is a steel stringer/multi-beam or girder carrying CO Rt 12 over Trib. to Chastain Creek in DeKalb County, Alabama. It was built in 1971, so it is 54 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 153 vehicles a day, roughly 2% of them trucks, projected to reach 227 by 2043. The structure is 20 ft (6.2 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCO Rt 12
CrossesTrib. to Chastain Creek
Location1.5 MI S Al 68 T9SR6E
RouteCounty Highway 18
CountyDeKalb County
StateAlabama
Coordinates34.26481, -85.97738
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.9 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic153 (2023)
Projected traffic227 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost$216,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO Rt 12 over Trib. to Chastain Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is CO Rt 12 over Trib. to Chastain 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 CO Rt 12 over Trib. to Chastain Creek carry?

About 153 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is CO Rt 12 over Trib. to Chastain Creek?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m) and a deck 24 ft wide.

Who owns CO Rt 12 over Trib. to Chastain Creek?

It is owned by the County Highway Agency.