US Bridges

US 90 over Styx River Relief

Fair

Baldwin County, Alabama · 0.5 MI W Florida Line · Structure no. 003421

Built
1949
76 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
578 ft
17 main spans
Daily traffic
5,381
2021 count
Owner
State
State Highway Agency

About this bridge

US 90 over Styx River Relief is a steel stringer/multi-beam or girder carrying US 90 over Styx River Relief 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 5,381 vehicles a day, roughly 7% of them trucks, projected to reach 8,072 by 2041. The structure is 578 ft (176.2 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 Relief
Location0.5 MI W Florida Line
RouteU.S. Route 90
CountyBaldwin County
StateAlabama
Coordinates30.52196, -87.45335
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.7 US tons
Inventory rating33.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans17
Design loadH 20
Structure length578 ft (176.2 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 traffic5,381 (2021)
Projected traffic8,072 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
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$4.6 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 90 over Styx River Relief built?

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

What condition is US 90 over Styx River Relief 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 Relief carry?

About 5,381 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is US 90 over Styx River Relief?

The structure is 578 ft (176.2 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 Relief?

It is owned by the State Highway Agency.