US Bridges

Old Mobile Hwy/Pas over Bayou Relief

Good

Jackson County, Mississippi · Sec 6 T 8S R 5W · Structure no. SA300000000A131

Built
2018
7 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
3,500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old Mobile Hwy/Pas over Bayou Relief is a concrete culvert carrying Old Mobile Hwy/Pas over Bayou Relief in Jackson County, Mississippi. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,500 vehicles a day, roughly 10% of them trucks, projected to reach 4,000 by 2043. The structure is 34 ft (10.5 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOld Mobile Hwy/Pas
CrossesBayou Relief
LocationSec 6 T 8S R 5W
RouteCity Street 321
Coordinates30.36948, -88.52187
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating91.8 US tons
Inventory rating70.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length34 ft (10.5 m)
Longest span16 ft (4.9 m)
Deck width58 ft (17.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic4,000 by 2043
Trucks10%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Old Mobile Hwy/Pas over Bayou Relief built?

It was built in 2018, making it 7 years old in 2025.

What condition is Old Mobile Hwy/Pas over Bayou 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 October 2023.

How much traffic does Old Mobile Hwy/Pas over Bayou Relief carry?

About 3,500 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Old Mobile Hwy/Pas over Bayou Relief?

The structure is 34 ft (10.5 m) long with a longest span of 16 ft (4.9 m) and a deck 58 ft wide.

Who owns Old Mobile Hwy/Pas over Bayou Relief?

It is owned by the City or Municipal Highway Agency.