US Bridges

Old Mobile Hwy/Pas over Relief

Good

Jackson County, Mississippi · Sec 5 T 8S R 5W · Structure no. SA3000000000167

Built
2003
22 years old
Condition
Good
inspected March 2024
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
3,500
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old Mobile Hwy/Pas over Relief is a concrete channel beam carrying Old Mobile Hwy/Pas over Relief in Jackson County, Mississippi. It was built in 2003, so it is 22 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 3,500 vehicles a day, roughly 10% of them trucks, projected to reach 5,000 by 2044. The structure is 31 ft (9.4 m) long and 31 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesOld Mobile Hwy/Pas
CrossesRelief
LocationSec 5 T 8S R 5W
RouteCity Street 321
Coordinates30.37962, -88.5064
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.2 US tons
Inventory rating50 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width31 ft (9.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2024)
Projected traffic5,000 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$600,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Mobile Hwy/Pas over Relief built?

It was built in 2003, making it 22 years old in 2025.

What condition is Old Mobile Hwy/Pas over 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 March 2024.

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

About 3,500 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Old Mobile Hwy/Pas over Relief?

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.

Who owns Old Mobile Hwy/Pas over Relief?

It is owned by the City or Municipal Highway Agency.