US Bridges

SR 363 over Mantachie Creek Relief

Good

Itawamba County, Mississippi · 5.7 MI N SR 371 · Structure no. 310036302901130

Built
1965
60 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
1,300
2023 count
Owner
State
State Highway Agency

About this bridge

SR 363 over Mantachie Creek Relief is a concrete slab carrying SR 363 over Mantachie Creek Relief in Itawamba County, Mississippi. It was built in 1965, so it is 60 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 1,300 vehicles a day, roughly 5% of them trucks, projected to reach 1,300 by 2043. The structure is 100 ft (30.5 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR 363
CrossesMantachie Creek Relief
Location5.7 MI N SR 371
RouteState Highway 363
Coordinates34.38633, -88.53657
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.8 US tons
Inventory rating36.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 15
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2023)
Projected traffic1,300 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed3.7 mi (6 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$203 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 363 over Mantachie Creek Relief built?

It was built in 1965, making it 60 years old in 2025.

What condition is SR 363 over Mantachie Creek 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 May 2024.

How much traffic does SR 363 over Mantachie Creek Relief carry?

About 1,300 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 363 over Mantachie Creek Relief?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns SR 363 over Mantachie Creek Relief?

It is owned by the State Highway Agency.