US Bridges

I-10WB to Water ST over I10-EB/WB/RAMP to WB I10

Fair

Mobile County, Alabama · West Tunnel Interchange · Structure no. 010665

Built
1972
53 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,179 ft
21 main spans
Daily traffic
4,065
2022 count
Owner
State
State Highway Agency

About this bridge

I-10WB to Water ST over I10-EB/WB/RAMP to WB I10 is a prestressed concrete stringer/multi-beam or girder carrying I-10WB to Water ST over I10-EB/WB/RAMP to WB I10 in Mobile County, Alabama. It was built in 1972, so it is 53 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 5 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 4,065 vehicles a day, roughly 13% of them trucks, projected to reach 6,098 by 2042. The structure is 1,179 ft (359.4 m) long and 29 ft wide.

Location

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CarriesI-10WB to Water ST
CrossesI10-EB/WB/RAMP to WB I10
LocationWest Tunnel Interchange
RouteInterstate 10
CountyMobile County
StateAlabama
Coordinates30.68559, -88.04046
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.6 US tons
Inventory rating22.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans21
Design loadHS 20
Structure length1,179 ft (359.4 m)
Longest span80 ft (24.4 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,065 (2022)
Projected traffic6,098 by 2042
Trucks13%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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$7.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-10WB to Water ST over I10-EB/WB/RAMP to WB I10 built?

It was built in 1972, making it 53 years old in 2025.

What condition is I-10WB to Water ST over I10-EB/WB/RAMP to WB I10 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 April 2024.

How much traffic does I-10WB to Water ST over I10-EB/WB/RAMP to WB I10 carry?

About 4,065 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is I-10WB to Water ST over I10-EB/WB/RAMP to WB I10?

The structure is 1,179 ft (359.4 m) long with a longest span of 80 ft (24.4 m) and a deck 29 ft wide.

Who owns I-10WB to Water ST over I10-EB/WB/RAMP to WB I10?

It is owned by the State Highway Agency.