US Bridges

SR 9 over Old Topishaw Canal

FairPosted for load

Calhoun County, Mississippi · 2.3 MI E SR 8 West · Structure no. 310000900704040

Built
1952
73 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
3 main spans
Daily traffic
3,100
2023 count
Owner
State
State Highway Agency

About this bridge

SR 9 over Old Topishaw Canal is a steel stringer/multi-beam or girder carrying SR 9 over Old Topishaw Canal in Calhoun County, Mississippi. It was built in 1952, so it is 73 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 3,100 vehicles a day, roughly 16% of them trucks, projected to reach 3,100 by 2043. The structure is 120 ft (36.6 m) long and 26 ft wide. If it were closed, the detour would be 70.2 mi (113 km).

Location

Open in Google Maps
CarriesSR 9
CrossesOld Topishaw Canal
Location2.3 MI E SR 8 West
RouteState Highway 9
CountyCalhoun County
StateMississippi
Coordinates33.83279, -89.32289
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.9 US tons
Inventory rating22.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2023)
Projected traffic3,100 by 2043
Trucks16%
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$1,000 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 9 over Old Topishaw Canal built?

It was built in 1952, making it 73 years old in 2025.

What condition is SR 9 over Old Topishaw Canal 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 9 over Old Topishaw Canal carry?

About 3,100 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SR 9 over Old Topishaw Canal?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 26 ft wide.

Who owns SR 9 over Old Topishaw Canal?

It is owned by the State Highway Agency.