US Bridges

US 90 over Styx River

Fair

Baldwin County, Alabama · 1 MI W Fla Line · Structure no. 003420

Built
1949
76 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
816 ft
24 main spans
Daily traffic
5,469
2023 count
Owner
State
State Highway Agency

About this bridge

US 90 over Styx River is a steel stringer/multi-beam or girder carrying US 90 over Styx River in Baldwin County, Alabama. It was built in 1949, so it is 76 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 5,469 vehicles a day, roughly 6% of them trucks, projected to reach 8,204 by 2043. The structure is 816 ft (248.7 m) long and 33 ft wide. If it were closed, the detour would be 55.3 mi (89 km).

Location

Open in Google Maps
CarriesUS 90
CrossesStyx River
Location1 MI W Fla Line
RouteU.S. Route 90
CountyBaldwin County
StateAlabama
Coordinates30.5181, -87.46368
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45.2 US tons
Inventory rating27.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans24
Design loadH 20
Structure length816 ft (248.7 m)
Longest span34 ft (10.4 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,469 (2023)
Projected traffic8,204 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.3 mi (89 km)
TollOn a free road
National Highway SystemNo

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$6.2 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 90 over Styx River built?

It was built in 1949, making it 76 years old in 2025.

What condition is US 90 over Styx River 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 December 2024.

How much traffic does US 90 over Styx River carry?

About 5,469 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 90 over Styx River?

The structure is 816 ft (248.7 m) long with a longest span of 34 ft (10.4 m) and a deck 33 ft wide.

Who owns US 90 over Styx River?

It is owned by the State Highway Agency.