US Bridges

Old Port Gibson over Br of Commissioners CR

Good

Claiborne County, Mississippi · Sec 6 T14N R 5E B · Structure no. SA1100000000086

Built
1984
41 years old
Condition
Good
inspected January 2024
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
190
2024 count
Owner
County
County Highway Agency

About this bridge

Old Port Gibson over Br of Commissioners CR is a concrete channel beam carrying Old Port Gibson over Br of Commissioners CR in Claiborne County, Mississippi. It was built in 1984, so it is 41 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 190 vehicles a day, roughly 8% of them trucks, projected to reach 285 by 2044. The structure is 31 ft (9.4 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesOld Port Gibson
CrossesBr of Commissioners CR
LocationSec 6 T14N R 5E B
RouteCounty Highway 406
Coordinates32.15167, -90.73361
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 rating36.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 15
Structure length31 ft (9.4 m)
Longest span31 ft (9.4 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic190 (2024)
Projected traffic285 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$127,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Port Gibson over Br of Commissioners CR built?

It was built in 1984, making it 41 years old in 2025.

What condition is Old Port Gibson over Br of Commissioners CR 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 January 2024.

How much traffic does Old Port Gibson over Br of Commissioners CR carry?

About 190 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Old Port Gibson over Br of Commissioners CR?

The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m) and a deck 24 ft wide.

Who owns Old Port Gibson over Br of Commissioners CR?

It is owned by the County Highway Agency.