US Bridges

US 90 over Mud Creek

Fair

Mobile County, Alabama · 4 MI E CO RD 39 · Structure no. 000501

Built
1928
97 years old, rebuilt 1999
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
22 ft
4 main spans
Daily traffic
5,291
2023 count
Owner
State
State Highway Agency

About this bridge

US 90 over Mud Creek is a concrete culvert carrying US 90 over Mud Creek in Mobile County, Alabama. It was built in 1928 and reconstructed in 1999, so it is 97 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 5,291 vehicles a day, roughly 4% of them trucks, projected to reach 7,937 by 2043. The structure is 22 ft (6.7 m) long and 56 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesUS 90
CrossesMud Creek
Location4 MI E CO RD 39
RouteU.S. Route 90
StateAlabama
Coordinates30.54043, -88.1802
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.1 US tons
Inventory rating34.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length22 ft (6.7 m)
Longest span5 ft (1.5 m)
Deck width56 ft (17 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,291 (2023)
Projected traffic7,937 by 2043
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$471,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 90 over Mud Creek built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1999.

What condition is US 90 over Mud Creek 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 Mud Creek carry?

About 5,291 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is US 90 over Mud Creek?

The structure is 22 ft (6.7 m) long with a longest span of 5 ft (1.5 m) and a deck 56 ft wide.

Who owns US 90 over Mud Creek?

It is owned by the State Highway Agency.