US Bridges

North Lake Drive over Little Cahaba Creek

Good

Jefferson County, Alabama · 50 E JCT Camp Coleman RD · Structure no. 017747

Built
1999
26 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
540
2023 count
Owner
County
County Highway Agency

About this bridge

North Lake Drive over Little Cahaba Creek is a prestressed concrete stringer/multi-beam or girder carrying North Lake Drive over Little Cahaba Creek in Jefferson County, Alabama. It was built in 1999, so it is 26 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 540 vehicles a day, roughly 1% of them trucks, projected to reach 775 by 2043. The structure is 85 ft (25.8 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNorth Lake Drive
CrossesLittle Cahaba Creek
Location50 E JCT Camp Coleman RD
RouteCounty Highway 320
StateAlabama
Coordinates33.6258, -86.5668
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating40.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length85 ft (25.8 m)
Longest span81 ft (24.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic540 (2023)
Projected traffic775 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$893,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was North Lake Drive over Little Cahaba Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is North Lake Drive over Little Cahaba 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 October 2023.

How much traffic does North Lake Drive over Little Cahaba Creek carry?

About 540 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is North Lake Drive over Little Cahaba Creek?

The structure is 85 ft (25.8 m) long with a longest span of 81 ft (24.7 m) and a deck 34 ft wide.

Who owns North Lake Drive over Little Cahaba Creek?

It is owned by the County Highway Agency.