US Bridges

SR 20 over Southern RR

Fair

Lawrence County, Alabama · 4 M W JCT SR 20 & SR 33 · Structure no. 013296

Built
1984
41 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
195 ft
3 main spans
Daily traffic
4,275
2024 count
Owner
State
State Highway Agency

About this bridge

SR 20 over Southern RR is a steel continuous stringer/multi-beam or girder carrying SR 20 over Southern RR 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,275 vehicles a day, roughly 22% of them trucks, projected to reach 5,758 by 2033. The structure is 195 ft (59.4 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesSR 20
CrossesSouthern RR
Location4 M W JCT SR 20 & SR 33
RouteState Highway 20
CountyLawrence County
StateAlabama
Coordinates34.68033, -87.34547
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating37.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length195 ft (59.4 m)
Longest span85 ft (25.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,275 (2024)
Projected traffic5,758 by 2033
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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$2.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 20 over Southern RR built?

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

What condition is SR 20 over Southern RR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does SR 20 over Southern RR carry?

About 4,275 vehicles per day (2024 count), of which roughly 22% are trucks.

How long is SR 20 over Southern RR?

The structure is 195 ft (59.4 m) long with a longest span of 85 ft (25.9 m) and a deck 43 ft wide.

Who owns SR 20 over Southern RR?

It is owned by the State Highway Agency.