US Bridges

SR 33 over Slough

FairPosted for load

Franklin County, Mississippi · 5.4 MI N Wilkinson Cl · Structure no. 310003301903530

Built
1950
75 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
3 main spans
Daily traffic
700
2023 count
Owner
State
State Highway Agency

About this bridge

SR 33 over Slough is a steel stringer/multi-beam or girder carrying SR 33 over Slough in Franklin County, Mississippi. It was built in 1950, so it is 75 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 700 vehicles a day, roughly 14% of them trucks, projected to reach 700 by 2043. The structure is 90 ft (27.4 m) long and 29 ft wide. If it were closed, the detour would be 70.2 mi (113 km).

Location

Open in Google Maps
CarriesSR 33
CrossesSlough
Location5.4 MI N Wilkinson Cl
RouteState Highway 33
CountyFranklin County
StateMississippi
Coordinates31.39824, -91.11174
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.3 US tons
Inventory rating24.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2023)
Projected traffic700 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed70.2 mi (113 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$416 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 33 over Slough built?

It was built in 1950, making it 75 years old in 2025.

What condition is SR 33 over Slough 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 May 2024.

How much traffic does SR 33 over Slough carry?

About 700 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 33 over Slough?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns SR 33 over Slough?

It is owned by the State Highway Agency.