US Bridges

I-22 over Mill Creek

Good

Walker County, Alabama · I-22 & Mill Creek · Structure no. 017687

Built
2003
22 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,215 ft
9 main spans
Daily traffic
14,713
2020 count
Owner
State
State Highway Agency

About this bridge

I-22 over Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying I-22 over Mill Creek in Walker County, Alabama. It was built in 2003, so it is 22 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 14,713 vehicles a day, roughly 24% of them trucks, projected to reach 16,000 by 2040. The structure is 1,215 ft (370.3 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesI-22
CrossesMill Creek
LocationI-22 & Mill Creek
RouteInterstate 22
CountyWalker County
StateAlabama
Coordinates33.9218, -87.5205
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating36.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length1,215 ft (370.3 m)
Longest span135 ft (41.1 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic14,713 (2020)
Projected traffic16,000 by 2040
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$11.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-22 over Mill Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is I-22 over Mill Creek 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 October 2024.

How much traffic does I-22 over Mill Creek carry?

About 14,713 vehicles per day (2020 count), of which roughly 24% are trucks.

How long is I-22 over Mill Creek?

The structure is 1,215 ft (370.3 m) long with a longest span of 135 ft (41.1 m) and a deck 43 ft wide.

Who owns I-22 over Mill Creek?

It is owned by the State Highway Agency.