US Bridges

CO 23 Big Oak Rd. over Scl Railroad

Good

Calhoun County, Alabama · Big Oak RD Rxr · Structure no. 012266

Built
1947
78 years old, rebuilt 1980
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete
Length
110 ft
3 main spans
Daily traffic
77
2021 count
Owner
Railroad
Railroad

About this bridge

CO 23 Big Oak Rd. over Scl Railroad is a prestressed concrete slab carrying CO 23 Big Oak Rd. over Scl Railroad in Calhoun County, Alabama. It was built in 1947 and reconstructed in 1980, so it is 78 years old, older than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 77 vehicles a day, roughly 1% of them trucks, projected to reach 119 by 2043. The structure is 110 ft (33.5 m) long and 20 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesCO 23 Big Oak Rd.
CrossesScl Railroad
LocationBig Oak RD Rxr
RouteCounty Highway 23
StateAlabama
Coordinates33.77466, -86.03369
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length110 ft (33.5 m)
Longest span42 ft (12.8 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77 (2021)
Projected traffic119 by 2043
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesRailroad
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerRailroad
Maintained byRailroad
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$639,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was CO 23 Big Oak Rd. over Scl Railroad built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1980.

What condition is CO 23 Big Oak Rd. over Scl Railroad in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does CO 23 Big Oak Rd. over Scl Railroad carry?

About 77 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is CO 23 Big Oak Rd. over Scl Railroad?

The structure is 110 ft (33.5 m) long with a longest span of 42 ft (12.8 m) and a deck 20 ft wide.

Who owns CO 23 Big Oak Rd. over Scl Railroad?

It is owned by the Railroad.