US Bridges

SR 29 over Leaf River Relief

Good

Perry County, Mississippi · 1.3 MI N US 98 · Structure no. 310002905603370

Built
1970
55 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete
Length
480 ft
24 main spans
Daily traffic
3,300
2023 count
Owner
State
State Highway Agency

About this bridge

SR 29 over Leaf River Relief is a concrete slab carrying SR 29 over Leaf River Relief in Perry County, Mississippi. It was built in 1970, so it is 55 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,300 vehicles a day, roughly 31% of them trucks, projected to reach 3,300 by 2043. The structure is 480 ft (146.3 m) long and 36 ft wide. If it were closed, the detour would be 32.9 mi (53 km).

CarriesSR 29
CrossesLeaf River Relief
Location1.3 MI N US 98
RouteState Highway 29
Coordinates31.20597, -89.03965
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating85.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans24
Design loadHS 20
Structure length480 ft (146.3 m)
Longest span20 ft (6.1 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2023)
Projected traffic3,300 by 2043
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed32.9 mi (53 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 29 over Leaf River Relief built?

It was built in 1970, making it 55 years old in 2025.

What condition is SR 29 over Leaf River Relief in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does SR 29 over Leaf River Relief carry?

About 3,300 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is SR 29 over Leaf River Relief?

The structure is 480 ft (146.3 m) long with a longest span of 20 ft (6.1 m) and a deck 36 ft wide.

Who owns SR 29 over Leaf River Relief?

It is owned by the State Highway Agency.