US Bridges

I20 over Norfolk Southern R/R

Good

Calhoun County, Alabama · .6 MI W JCT SR21 · Structure no. 020180

Built
2012
13 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
302 ft
3 main spans
Daily traffic
22,944
2022 count
Owner
State
State Highway Agency

About this bridge

I20 over Norfolk Southern R/R is a prestressed concrete stringer/multi-beam or girder carrying I20 over Norfolk Southern R/R in Calhoun County, Alabama. It was built in 2012, so it is 13 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 22,944 vehicles a day, roughly 38% of them trucks, projected to reach 32,122 by 2042. The structure is 302 ft (92.1 m) long and 61 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI20
CrossesNorfolk Southern R/R
Location.6 MI W JCT SR21
RouteInterstate 20
CountyCalhoun County
StateAlabama
Coordinates33.60409, -85.84157
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating33.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length302 ft (92.1 m)
Longest span108 ft (32.8 m)
Deck width61 ft (18.7 m)
Roadway width58 ft (17.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,944 (2022)
Projected traffic32,122 by 2042
Trucks38%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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$4.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I20 over Norfolk Southern R/R built?

It was built in 2012, making it 13 years old in 2025.

What condition is I20 over Norfolk Southern R/R 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 April 2024.

How much traffic does I20 over Norfolk Southern R/R carry?

About 22,944 vehicles per day (2022 count), of which roughly 38% are trucks.

How long is I20 over Norfolk Southern R/R?

The structure is 302 ft (92.1 m) long with a longest span of 108 ft (32.8 m) and a deck 61 ft wide.

Who owns I20 over Norfolk Southern R/R?

It is owned by the State Highway Agency.