US Bridges

Tyson RD over Relief Bayou Pierre Riv

Fair

Copiah County, Mississippi · Sec 2 T 9N R 7E B · Structure no. SA1500000000093

Built
1967
58 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
160 ft
4 main spans
Daily traffic
140
2015 count
Owner
County
County Highway Agency

About this bridge

Tyson RD over Relief Bayou Pierre Riv is a steel stringer/multi-beam or girder carrying Tyson RD over Relief Bayou Pierre Riv in Copiah County, Mississippi. It was built in 1967, so it is 58 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: open, posting recommended but not legally implemented.

It carries about 140 vehicles a day, roughly 8% of them trucks, projected to reach 230 by 2040. The structure is 160 ft (48.8 m) long and 24 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesTyson RD
CrossesRelief Bayou Pierre Riv
LocationSec 2 T 9N R 7E B
RouteCounty Highway 531
Coordinates31.78444, -90.46419
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating36.4 US tons
Inventory rating21.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2015)
Projected traffic230 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed11.8 mi (19 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$480,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Tyson RD over Relief Bayou Pierre Riv built?

It was built in 1967, making it 58 years old in 2025.

What condition is Tyson RD over Relief Bayou Pierre Riv 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 November 2024.

How much traffic does Tyson RD over Relief Bayou Pierre Riv carry?

About 140 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Tyson RD over Relief Bayou Pierre Riv?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns Tyson RD over Relief Bayou Pierre Riv?

It is owned by the County Highway Agency.