US Bridges

South Frontage RD over I-22

Good

Walker County, Alabama · 57.4 MP on I-22/S Front · Structure no. 016903

Built
1996
29 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
479 ft
5 main spans
Daily traffic
500
2020 count
Owner
State
State Highway Agency

About this bridge

South Frontage RD over I-22 is a prestressed concrete stringer/multi-beam or girder carrying South Frontage RD over I-22 in Walker County, Alabama. It was built in 1996, so it is 29 years old, younger 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 500 vehicles a day, roughly 5% of them trucks, projected to reach 400 by 2041. The structure is 479 ft (146 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSouth Frontage RD
CrossesI-22
Location57.4 MP on I-22/S Front
StateAlabama
Coordinates33.85271, -87.3453
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating50 US tons
Inventory rating32.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length479 ft (146 m)
Longest span115 ft (35.1 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2020)
Projected traffic400 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost$4.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was South Frontage RD over I-22 built?

It was built in 1996, making it 29 years old in 2025.

What condition is South Frontage RD over I-22 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 March 2023.

How much traffic does South Frontage RD over I-22 carry?

About 500 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is South Frontage RD over I-22?

The structure is 479 ft (146 m) long with a longest span of 115 ft (35.1 m) and a deck 37 ft wide.

Who owns South Frontage RD over I-22?

It is owned by the State Highway Agency.