US Bridges

Old Fort Bayou over Relief

Good

Jackson County, Mississippi · Sec 3 T 7S R 8W B · Structure no. SA3000000000114

Built
2006
19 years old
Condition
Good
inspected November 2023
Type
Channel Beam
Concrete
Length
57 ft
3 main spans
Daily traffic
1,500
2023 count
Owner
County
County Highway Agency

About this bridge

Old Fort Bayou over Relief is a concrete channel beam carrying Old Fort Bayou over Relief in Jackson County, Mississippi. It was built in 2006, so it is 19 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 1,500 vehicles a day, roughly 10% of them trucks, projected to reach 2,000 by 2043. The structure is 57 ft (17.4 m) long and 28 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesOld Fort Bayou
CrossesRelief
LocationSec 3 T 7S R 8W B
RouteCounty Highway 2107
Coordinates30.46491, -88.77168
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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
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 rating99.4 US tons
Inventory rating59.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2023)
Projected traffic2,000 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Fort Bayou over Relief built?

It was built in 2006, making it 19 years old in 2025.

What condition is Old Fort Bayou 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 November 2023.

How much traffic does Old Fort Bayou over Relief carry?

About 1,500 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Old Fort Bayou over Relief?

The structure is 57 ft (17.4 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Old Fort Bayou over Relief?

It is owned by the County Highway Agency.