US Bridges

I-10 WB over March Road

Fair

Mobile County, Alabama · 8.4 MI E Miss ST Line · Structure no. 008124

Built
1964
61 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Concrete Continuous
Length
146 ft
3 main spans
Daily traffic
22,394
2022 count
Owner
State
State Highway Agency

About this bridge

I-10 WB over March Road is a concrete continuous tee beam carrying I-10 WB over March Road in Mobile County, Alabama. It was built in 1964, so it is 61 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 22,394 vehicles a day, roughly 28% of them trucks, projected to reach 38,091 by 2042. The structure is 146 ft (44.5 m) long and 47 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesI-10 WB
CrossesMarch Road
Location8.4 MI E Miss ST Line
RouteInterstate 10
CountyMobile County
StateAlabama
Coordinates30.5206, -88.27081
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
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 alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating34.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span55 ft (16.8 m)
Deck width47 ft (14.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,394 (2022)
Projected traffic38,091 by 2042
Trucks28%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-10 WB over March Road built?

It was built in 1964, making it 61 years old in 2025.

What condition is I-10 WB over March Road 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 December 2023.

How much traffic does I-10 WB over March Road carry?

About 22,394 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is I-10 WB over March Road?

The structure is 146 ft (44.5 m) long with a longest span of 55 ft (16.8 m) and a deck 47 ft wide.

Who owns I-10 WB over March Road?

It is owned by the State Highway Agency.