US Bridges

AL-74 over Rock Creek

Good

Winston County, Alabama · 2 Mi. E of Addison · Structure no. 015869

Built
1994
31 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
820 ft
6 main spans
Daily traffic
3,700
2020 count
Owner
State
State Highway Agency

About this bridge

AL-74 over Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying AL-74 over Rock Creek in Winston County, Alabama. It was built in 1994, so it is 31 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 3,700 vehicles a day, roughly 7% of them trucks, projected to reach 4,210 by 2040. The structure is 820 ft (249.9 m) long and 46 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesAL-74
CrossesRock Creek
Location2 Mi. E of Addison
RouteU.S. Route 74
StateAlabama
Coordinates34.18357, -87.14475
Functional classRural Principal Arterial - Other

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.8 US tons
Inventory rating37.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6 (+1 approach)
Design loadHS 20
Structure length820 ft (249.9 m)
Longest span125 ft (38.1 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2020)
Projected traffic4,210 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemYes

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$8.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was AL-74 over Rock Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is AL-74 over Rock 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 2024.

How much traffic does AL-74 over Rock Creek carry?

About 3,700 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is AL-74 over Rock Creek?

The structure is 820 ft (249.9 m) long with a longest span of 125 ft (38.1 m) and a deck 46 ft wide.

Who owns AL-74 over Rock Creek?

It is owned by the State Highway Agency.