US Bridges

I-10 W to US 90 E over Rattlesnake Branch

Fair

Mobile County, Alabama · I-10/US 90 Interch · Structure no. 008136

Built
1964
61 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
39 ft
3 main spans
Daily traffic
2,683
2022 count
Owner
State
State Highway Agency

About this bridge

I-10 W to US 90 E over Rattlesnake Branch is a concrete culvert carrying I-10 W to US 90 E over Rattlesnake 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 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 2,683 vehicles a day, roughly 6% of them trucks, projected to reach 4,025 by 2042. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-10 W to US 90 E
CrossesRattlesnake Branch
LocationI-10/US 90 Interch
RouteInterstate 10
CountyMobile County
StateAlabama
Coordinates30.58352, -88.17094
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.2 US tons
Inventory rating45.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,683 (2022)
Projected traffic4,025 by 2042
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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$697,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-10 W to US 90 E over Rattlesnake Branch built?

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

What condition is I-10 W to US 90 E over Rattlesnake Branch 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 November 2023.

How much traffic does I-10 W to US 90 E over Rattlesnake Branch carry?

About 2,683 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is I-10 W to US 90 E over Rattlesnake Branch?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m).

Who owns I-10 W to US 90 E over Rattlesnake Branch?

It is owned by the State Highway Agency.