US Bridges

SR 20 over Big Nance Creek

Good

Lawrence County, Alabama · 2 M W JCT SR 20 & SR 33 · Structure no. 013298

Built
1984
41 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
260 ft
4 main spans
Daily traffic
5,010
2024 count
Owner
State
State Highway Agency

About this bridge

SR 20 over Big Nance Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 20 over Big Nance Creek in Lawrence County, Alabama. It was built in 1984, so it is 41 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 5,010 vehicles a day, roughly 20% of them trucks, projected to reach 6,747 by 2033. The structure is 260 ft (79.2 m) long and 43 ft wide.

CarriesSR 20
CrossesBig Nance Creek
Location2 M W JCT SR 20 & SR 33
RouteState Highway 20
StateAlabama
Coordinates34.68519, -87.31439
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 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 rating73 US tons
Inventory rating34.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length260 ft (79.2 m)
Longest span65 ft (19.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,010 (2024)
Projected traffic6,747 by 2033
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$2.8 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 20 over Big Nance Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is SR 20 over Big Nance 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 November 2024.

How much traffic does SR 20 over Big Nance Creek carry?

About 5,010 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is SR 20 over Big Nance Creek?

The structure is 260 ft (79.2 m) long with a longest span of 65 ft (19.8 m) and a deck 43 ft wide.

Who owns SR 20 over Big Nance Creek?

It is owned by the State Highway Agency.