US Bridges

Al 158 over Seabury Creek

Good

Mobile County, Alabama · Al 158 @ Seabury · Structure no. 020526

Built
2020
5 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
344 ft
5 main spans
Daily traffic
4,000
2022 count
Owner
State
State Highway Agency

About this bridge

Al 158 over Seabury Creek is a prestressed concrete stringer/multi-beam or girder carrying Al 158 over Seabury Creek in Mobile County, Alabama. It was built in 2020, so it is 5 years old, younger 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 4,000 vehicles a day, roughly 7% of them trucks, projected to reach 6,000 by 2042. The structure is 344 ft (104.9 m) long and 54 ft wide.

CarriesAl 158
CrossesSeabury Creek
LocationAl 158 @ Seabury
RouteU.S. Route 158
StateAlabama
Coordinates30.80528, -88.24228
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating76.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length344 ft (104.9 m)
Longest span69 ft (21 m)
Deck width54 ft (16.6 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,000 (2022)
Projected traffic6,000 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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$4.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Al 158 over Seabury Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Al 158 over Seabury Creek 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 May 2024.

How much traffic does Al 158 over Seabury Creek carry?

About 4,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Al 158 over Seabury Creek?

The structure is 344 ft (104.9 m) long with a longest span of 69 ft (21 m) and a deck 54 ft wide.

Who owns Al 158 over Seabury Creek?

It is owned by the State Highway Agency.