US Bridges

SR 309 over I 22

Fair

Marshall County, Mississippi · SR 309 over I 22 · Structure no. 31003090470160A

Built
1982
43 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
332 ft
2 main spans
Daily traffic
3,650
2023 count
Owner
State
State Highway Agency

About this bridge

SR 309 over I 22 is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 309 over I 22 in Marshall County, Mississippi. It was built in 1982, so it is 43 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 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 3,650 vehicles a day, roughly 5% of them trucks, projected to reach 3,650 by 2043. The structure is 332 ft (101.2 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR 309
CrossesI 22
LocationSR 309 over I 22
RouteState Highway 309
Coordinates34.85583, -89.6887
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating32.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length332 ft (101.2 m)
Longest span90 ft (27.4 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,650 (2023)
Projected traffic3,650 by 2043
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 309 over I 22 built?

It was built in 1982, making it 43 years old in 2025.

What condition is SR 309 over I 22 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 August 2024.

How much traffic does SR 309 over I 22 carry?

About 3,650 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 309 over I 22?

The structure is 332 ft (101.2 m) long with a longest span of 90 ft (27.4 m) and a deck 41 ft wide.

Who owns SR 309 over I 22?

It is owned by the State Highway Agency.