US Bridges

Smith Co. 80 over Leaf River

Fair

Smith County, Mississippi · Sec 13 T 1N R 8E · Structure no. SA6500000000026

Built
2002
23 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
590 ft
11 main spans
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

Smith Co. 80 over Leaf River is a prestressed concrete stringer/multi-beam or girder carrying Smith Co. 80 over Leaf River in Smith County, Mississippi. It was built in 2002, so it is 23 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2044. The structure is 590 ft (179.8 m) long and 31 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesSmith Co. 80
CrossesLeaf River
LocationSec 13 T 1N R 8E
RouteCounty Highway 24
Coordinates31.92014, -89.42437
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.2 US tons
Inventory rating23 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length590 ft (179.8 m)
Longest span110 ft (33.5 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic150 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Smith Co. 80 over Leaf River built?

It was built in 2002, making it 23 years old in 2025.

What condition is Smith Co. 80 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 November 2024.

How much traffic does Smith Co. 80 over Leaf River carry?

About 100 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Smith Co. 80 over Leaf River?

The structure is 590 ft (179.8 m) long with a longest span of 110 ft (33.5 m) and a deck 31 ft wide.

Who owns Smith Co. 80 over Leaf River?

It is owned by the County Highway Agency.