US Bridges

SR 465 over Steel Bayou

FairPosted for load

Issaquena County, Mississippi · 6.3 MI W US 61 · Structure no. 310046502800630

Built
1959
66 years old, rebuilt 1977
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
1,160 ft
5 main spans
Daily traffic
840
2023 count
Owner
State
State Highway Agency

About this bridge

SR 465 over Steel Bayou is a steel stringer/multi-beam or girder carrying SR 465 over Steel Bayou in Issaquena County, Mississippi. It was built in 1959 and reconstructed in 1977, so it is 66 years old, older than the Mississippi average of 38.9 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. Its operating status is: posted for load restriction.

It carries about 840 vehicles a day, roughly 21% of them trucks, projected to reach 840 by 2043. The structure is 1,160 ft (353.6 m) long and 31 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesSR 465
CrossesSteel Bayou
Location6.3 MI W US 61
RouteState Highway 465
CountyIssaquena County
StateMississippi
Coordinates32.45182, -90.88843
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.8 US tons
Inventory rating24.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5 (+18 approach)
Design loadHS 15
Structure length1,160 ft (353.6 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic840 (2023)
Projected traffic840 by 2043
Trucks21%
Lanes on structure20
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1,000 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 465 over Steel Bayou built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1977.

What condition is SR 465 over Steel Bayou 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 February 2024.

How much traffic does SR 465 over Steel Bayou carry?

About 840 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is SR 465 over Steel Bayou?

The structure is 1,160 ft (353.6 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns SR 465 over Steel Bayou?

It is owned by the State Highway Agency.