US Bridges

I-22 over NS Railroad

Good

Walker County, Alabama · M.P. 62.9 on I-22 · Structure no. 016322

Built
1998
27 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,370 ft
9 main spans
Daily traffic
20,662
2020 count
Owner
State
State Highway Agency

About this bridge

I-22 over NS Railroad is a prestressed concrete stringer/multi-beam or girder carrying I-22 over NS Railroad in Walker County, Alabama. It was built in 1998, so it is 27 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 20,662 vehicles a day, roughly 20% of them trucks, projected to reach 28,769 by 2041. The structure is 1,370 ft (417.6 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-22
CrossesNS Railroad
LocationM.P. 62.9 on I-22
RouteInterstate 22
CountyWalker County
StateAlabama
Coordinates33.80664, -87.27047
Functional classRural Principal Arterial - Interstate

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 protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.3 US tons
Inventory rating38.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9 (+6 approach)
Design loadHS 20
Structure length1,370 ft (417.6 m)
Longest span99 ft (30.2 m)
Deck width59 ft (17.9 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,662 (2020)
Projected traffic28,769 by 2041
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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$18.3 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-22 over NS Railroad built?

It was built in 1998, making it 27 years old in 2025.

What condition is I-22 over NS Railroad 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 2023.

How much traffic does I-22 over NS Railroad carry?

About 20,662 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is I-22 over NS Railroad?

The structure is 1,370 ft (417.6 m) long with a longest span of 99 ft (30.2 m) and a deck 59 ft wide.

Who owns I-22 over NS Railroad?

It is owned by the State Highway Agency.