US Bridges

SR 20 over Warren Branch

Good

Lawrence County, Alabama · 0.1 MI E SR 20 & SR 101 · Structure no. 021587

Built
1966
59 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
9,626
2024 count
Owner
State
State Highway Agency

About this bridge

SR 20 over Warren Branch is a concrete continuous culvert carrying SR 20 over Warren Branch in Lawrence County, Alabama. It was built in 1966, so it is 59 years old, older 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 9,626 vehicles a day, roughly 14% of them trucks, projected to reach 10,166 by 2035. The structure is 24 ft (7.3 m) long and 152 ft wide.

CarriesSR 20
CrossesWarren Branch
Location0.1 MI E SR 20 & SR 101
RouteState Highway 20
StateAlabama
Coordinates34.68117, -87.40444
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.7 US tons
Inventory rating41.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width152 ft (46.3 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,626 (2024)
Projected traffic10,166 by 2035
Trucks14%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$1.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 20 over Warren Branch built?

It was built in 1966, making it 59 years old in 2025.

What condition is SR 20 over Warren Branch 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 Warren Branch carry?

About 9,626 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is SR 20 over Warren Branch?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m) and a deck 152 ft wide.

Who owns SR 20 over Warren Branch?

It is owned by the State Highway Agency.