US Bridges

SR 309 over Nonconnah Creek

Fair

Marshall County, Mississippi · 8.2 MI N SR 178 · Structure no. 310030904702540

Built
1991
34 years old
Condition
Fair
inspected July 2023
Type
Channel Beam
Concrete
Length
69 ft
1 main span
Daily traffic
5,700
2023 count
Owner
State
State Highway Agency

About this bridge

SR 309 over Nonconnah Creek is a concrete channel beam carrying SR 309 over Nonconnah Creek in Marshall County, Mississippi. It was built in 1991, so it is 34 years old, younger 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.

It carries about 5,700 vehicles a day, roughly 11% of them trucks, projected to reach 5,700 by 2043. The structure is 69 ft (21 m) long and 28 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

Location

Open in Google Maps
CarriesSR 309
CrossesNonconnah Creek
Location8.2 MI N SR 178
RouteState Highway 309
CountyMarshall County
StateMississippi
Coordinates34.98758, -89.68888
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating31.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadHS 20
Structure length69 ft (21 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,700 (2023)
Projected traffic5,700 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.1 mi (71 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$330 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 309 over Nonconnah Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is SR 309 over Nonconnah Creek 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 July 2023.

How much traffic does SR 309 over Nonconnah Creek carry?

About 5,700 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 309 over Nonconnah Creek?

The structure is 69 ft (21 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns SR 309 over Nonconnah Creek?

It is owned by the State Highway Agency.