US Bridges

Old Port Gibson over Relief Big Sand Creek

Fair

Claiborne County, Mississippi · Sec 4 T13N R 4E B · Structure no. SA1100000000074

Built
1980
45 years old
Condition
Fair
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 Relief Big Sand Creek is a concrete channel beam carrying Old Port Gibson over Relief Big Sand Creek in Claiborne County, Mississippi. It was built in 1980, so it is 45 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

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 16.2 mi (26 km).

CarriesOld Port Gibson
CrossesRelief Big Sand Creek
LocationSec 4 T13N R 4E B
RouteCounty Highway 406
Coordinates32.11683, -90.77408
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to 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 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
CrossesRelief for waterway
Detour if closed16.2 mi (26 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 Relief Big Sand Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Old Port Gibson over Relief Big Sand Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2024.

How much traffic does Old Port Gibson over Relief Big Sand Creek carry?

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

How long is Old Port Gibson over Relief Big Sand Creek?

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 Relief Big Sand Creek?

It is owned by the County Highway Agency.