US Bridges

ST Clair /HWY157 over Kelly Creek

Good

St. Clair County, Alabama · 1 0 MI W Logan Martin Dam · Structure no. 015233

Built
1990
35 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
170 ft
5 main spans
Daily traffic
600
1999 count
Owner
County
County Highway Agency

About this bridge

ST Clair /HWY157 over Kelly Creek is a prestressed concrete stringer/multi-beam or girder carrying ST Clair /HWY157 over Kelly Creek in St. Clair County, Alabama. It was built in 1990, so it is 35 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 600 vehicles a day, roughly 15% of them trucks, projected to reach 997 by 2029. The structure is 170 ft (51.8 m) long and 28 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesST Clair /HWY157
CrossesKelly Creek
Location1 0 MI W Logan Martin Dam
RouteCounty Highway 157
CountySt. Clair County
StateAlabama
Coordinates33.42935, -86.35354
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span34 ft (10.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (1999)
Projected traffic997 by 2029
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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$1.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was ST Clair /HWY157 over Kelly Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is ST Clair /HWY157 over Kelly Creek 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 January 2025.

How much traffic does ST Clair /HWY157 over Kelly Creek carry?

About 600 vehicles per day (1999 count), of which roughly 15% are trucks.

How long is ST Clair /HWY157 over Kelly Creek?

The structure is 170 ft (51.8 m) long with a longest span of 34 ft (10.4 m) and a deck 28 ft wide.

Who owns ST Clair /HWY157 over Kelly Creek?

It is owned by the County Highway Agency.