US Bridges

SR 21 over Al Railroad Co.

Fair

Monroe County, Alabama · 0.5MI.N. Tunnel Springs · Structure no. 014545

Built
1989
36 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
278 ft
4 main spans
Daily traffic
2,000
2013 count
Owner
State
State Highway Agency

About this bridge

SR 21 over Al Railroad Co. is a steel continuous stringer/multi-beam or girder carrying SR 21 over Al Railroad Co. in Monroe County, Alabama. It was built in 1989, so it is 36 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 2,000 vehicles a day, roughly 24% of them trucks, projected to reach 2,494 by 2033. The structure is 278 ft (84.8 m) long and 41 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 21
CrossesAl Railroad Co.
Location0.5MI.N. Tunnel Springs
RouteState Highway 21
CountyMonroe County
StateAlabama
Coordinates31.64416, -87.23903
Functional classRural Minor Arterial

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 inspectionOctober 2023
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 alignment6: Equal to present minimum criteria
Operating rating67.7 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length278 ft (84.8 m)
Longest span88 ft (26.8 m)
Deck width41 ft (12.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2013)
Projected traffic2,494 by 2033
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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$2.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 21 over Al Railroad Co. built?

It was built in 1989, making it 36 years old in 2025.

What condition is SR 21 over Al Railroad Co. 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 October 2023.

How much traffic does SR 21 over Al Railroad Co. carry?

About 2,000 vehicles per day (2013 count), of which roughly 24% are trucks.

How long is SR 21 over Al Railroad Co.?

The structure is 278 ft (84.8 m) long with a longest span of 88 ft (26.8 m) and a deck 41 ft wide.

Who owns SR 21 over Al Railroad Co.?

It is owned by the State Highway Agency.