US Bridges

I-10 EB to US 90 over US 90

Fair

Mobile County, Alabama · East Tunnel Interchange · Structure no. 010852

Built
1973
52 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
649 ft
12 main spans
Daily traffic
4,902
2023 count
Owner
State
State Highway Agency

About this bridge

I-10 EB to US 90 over US 90 is a prestressed concrete stringer/multi-beam or girder carrying I-10 EB to US 90 over US 90 in Mobile County, Alabama. It was built in 1973, so it is 52 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 4,902 vehicles a day, roughly 6% of them trucks, projected to reach 7,352 by 2043. The structure is 649 ft (197.8 m) long and 25 ft wide.

Location

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CarriesI-10 EB to US 90
CrossesUS 90
LocationEast Tunnel Interchange
RouteInterstate 10
CountyMobile County
StateAlabama
Coordinates30.69179, -88.0284
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating61.9 US tons
Inventory rating37.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length649 ft (197.8 m)
Longest span60 ft (18.3 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,902 (2023)
Projected traffic7,352 by 2043
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesOther
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$3.8 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-10 EB to US 90 over US 90 built?

It was built in 1973, making it 52 years old in 2025.

What condition is I-10 EB to US 90 over US 90 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 October 2024.

How much traffic does I-10 EB to US 90 over US 90 carry?

About 4,902 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is I-10 EB to US 90 over US 90?

The structure is 649 ft (197.8 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.

Who owns I-10 EB to US 90 over US 90?

It is owned by the State Highway Agency.