US Bridges

SR 20 over Southern RR

Fair

Colbert County, Alabama · 0.5 MI E JCT SR 2 & SR 13 · Structure no. 015801

Built
1993
32 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
167 ft
1 main span
Daily traffic
8,645
2024 count
Owner
State
State Highway Agency

About this bridge

SR 20 over Southern RR is a prestressed concrete stringer/multi-beam or girder carrying SR 20 over Southern RR in Colbert County, Alabama. It was built in 1993, so it is 32 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 6 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 8,645 vehicles a day, roughly 23% of them trucks, projected to reach 11,643 by 2033. The structure is 167 ft (50.9 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesSR 20
CrossesSouthern RR
Location0.5 MI E JCT SR 2 & SR 13
RouteState Highway 20
CountyColbert County
StateAlabama
Coordinates34.70728, -87.65801
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.3 US tons
Inventory rating43.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length167 ft (50.9 m)
Longest span73 ft (22.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,645 (2024)
Projected traffic11,643 by 2033
Trucks23%
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$1.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 20 over Southern RR built?

It was built in 1993, making it 32 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 8,645 vehicles per day (2024 count), of which roughly 23% are trucks.

How long is SR 20 over Southern RR?

The structure is 167 ft (50.9 m) long with a longest span of 73 ft (22.3 m) and a deck 43 ft wide.

Who owns SR 20 over Southern RR?

It is owned by the State Highway Agency.