US Bridges

SR 15 over Leaf River Relief

Good

Perry County, Mississippi · 1.8 MI N SR 198 · Structure no. 310001505604220

Built
2012
13 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
402 ft
10 main spans
Daily traffic
2,200
2023 count
Owner
State
State Highway Agency

About this bridge

SR 15 over Leaf River Relief is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 15 over Leaf River Relief in Perry County, Mississippi. It was built in 2012, so it is 13 years old, younger 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 2,200 vehicles a day, roughly 14% of them trucks, projected to reach 2,200 by 2043. The structure is 402 ft (122.4 m) long and 47 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesSR 15
CrossesLeaf River Relief
Location1.8 MI N SR 198
RouteState Highway 15
Coordinates31.19412, -88.91392
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating49.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length402 ft (122.4 m)
Longest span40 ft (12.2 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2023)
Projected traffic2,200 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed18 mi (29 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 15 over Leaf River Relief built?

It was built in 2012, making it 13 years old in 2025.

What condition is SR 15 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 15 over Leaf River Relief carry?

About 2,200 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 15 over Leaf River Relief?

The structure is 402 ft (122.4 m) long with a longest span of 40 ft (12.2 m) and a deck 47 ft wide.

Who owns SR 15 over Leaf River Relief?

It is owned by the State Highway Agency.