US Bridges

SR 28 over Leaf River

Fair

Smith County, Mississippi · 1.4 MI E SR 37 · Structure no. 310002806511630

Built
1973
52 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
426 ft
3 main spans
Daily traffic
5,800
2023 count
Owner
State
State Highway Agency

About this bridge

SR 28 over Leaf River is a steel continuous stringer/multi-beam or girder carrying SR 28 over Leaf River in Smith County, Mississippi. It was built in 1973, so it is 52 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.

It carries about 5,800 vehicles a day, roughly 14% of them trucks, projected to reach 5,800 by 2043. The structure is 426 ft (129.8 m) long and 42 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesSR 28
CrossesLeaf River
Location1.4 MI E SR 37
RouteState Highway 28
CountySmith County
StateMississippi
Coordinates31.82799, -89.40809
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
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 rating75.2 US tons
Inventory rating43.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+3 approach)
Design loadHS 20
Structure length426 ft (129.8 m)
Longest span120 ft (36.6 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2023)
Projected traffic5,800 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 28 over Leaf River built?

It was built in 1973, making it 52 years old in 2025.

What condition is SR 28 over Leaf River 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 2023.

How much traffic does SR 28 over Leaf River carry?

About 5,800 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 28 over Leaf River?

The structure is 426 ft (129.8 m) long with a longest span of 120 ft (36.6 m) and a deck 42 ft wide.

Who owns SR 28 over Leaf River?

It is owned by the State Highway Agency.