US Bridges

US 90 over Rattlesnake Branch

Fair

Mobile County, Alabama · 0.1 MI E I-10 · Structure no. 008113

Built
1952
73 years old, rebuilt 1964
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
23,643
2023 count
Owner
State
State Highway Agency

About this bridge

US 90 over Rattlesnake Branch is a concrete culvert carrying US 90 over Rattlesnake Branch in Mobile County, Alabama. It was built in 1952 and reconstructed in 1964, so it is 73 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 23,643 vehicles a day, roughly 2% of them trucks, projected to reach 35,464 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS 90
CrossesRattlesnake Branch
Location0.1 MI E I-10
RouteU.S. Route 90
CountyMobile County
StateAlabama
Coordinates30.5834, -88.17017
Functional classUrban Other Principal Arterial

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 inspectionJuly 2024
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 alignment8: Equal to present desirable criteria
Operating rating66.4 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,643 (2023)
Projected traffic35,464 by 2043
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 90 over Rattlesnake Branch built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1964.

What condition is US 90 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 July 2024.

How much traffic does US 90 over Rattlesnake Branch carry?

About 23,643 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is US 90 over Rattlesnake Branch?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns US 90 over Rattlesnake Branch?

It is owned by the State Highway Agency.