US Bridges

I-10 EB over Highland Branch

Good

Mobile County, Alabama · 3.4 MI W US 90 · Structure no. 008129

Built
1964
61 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
30,490
2022 count
Owner
State
State Highway Agency

About this bridge

I-10 EB over Highland Branch is a concrete culvert carrying I-10 EB over Highland Branch 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 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 30,490 vehicles a day, roughly 24% of them trucks, projected to reach 45,735 by 2042. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-10 EB
CrossesHighland Branch
Location3.4 MI W US 90
RouteInterstate 10
CountyMobile County
StateAlabama
Coordinates30.54996, -88.21514
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.4 US tons
Inventory rating48.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,490 (2022)
Projected traffic45,735 by 2042
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost$565,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-10 EB over Highland Branch built?

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

What condition is I-10 EB over Highland Branch 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 November 2023.

How much traffic does I-10 EB over Highland Branch carry?

About 30,490 vehicles per day (2022 count), of which roughly 24% are trucks.

How long is I-10 EB over Highland Branch?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).

Who owns I-10 EB over Highland Branch?

It is owned by the State Highway Agency.