US Bridges

I-10 WB to SR 163 over I-10 EB

Fair

Mobile County, Alabama · I-10 @ SR 163 Interchange · Structure no. 008958

Built
1966
59 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
626 ft
3 main spans
Daily traffic
2,690
2022 count
Owner
State
State Highway Agency

About this bridge

I-10 WB to SR 163 over I-10 EB is a prestressed concrete continuous box beam or girders - multiple carrying I-10 WB to SR 163 over I-10 EB in Mobile County, Alabama. It was built in 1966, so it is 59 years old, older 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 2,690 vehicles a day, roughly 4% of them trucks, projected to reach 4,035 by 2042. The structure is 626 ft (190.8 m) long and 27 ft wide.

CarriesI-10 WB to SR 163
CrossesI-10 EB
LocationI-10 @ SR 163 Interchange
RouteInterstate 10
StateAlabama
Coordinates30.63838, -88.0908
Functional classUrban Principal Arterial - Interstate

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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+10 approach)
Design loadHS 20
Structure length626 ft (190.8 m)
Longest span91 ft (27.7 m)
Deck width27 ft (8.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,690 (2022)
Projected traffic4,035 by 2042
Trucks4%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and railroad
Detour if closed—
TollOn a free road
National Highway SystemYes

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 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-10 WB to SR 163 over I-10 EB built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-10 WB to SR 163 over I-10 EB 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 June 2024.

How much traffic does I-10 WB to SR 163 over I-10 EB carry?

About 2,690 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is I-10 WB to SR 163 over I-10 EB?

The structure is 626 ft (190.8 m) long with a longest span of 91 ft (27.7 m) and a deck 27 ft wide.

Who owns I-10 WB to SR 163 over I-10 EB?

It is owned by the State Highway Agency.