US Bridges

Co.Road 251 over 851 over Relief Opening

Good

Lafayette County, Mississippi · Sec 10 T 8S R 1W B · Structure no. SA3600000000039

Built
1985
40 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
69 ft
1 main span
Daily traffic
200
2021 count
Owner
County
County Highway Agency

About this bridge

Co.Road 251 over 851 over Relief Opening is a prestressed concrete stringer/multi-beam or girder carrying Co.Road 251 over 851 over Relief Opening in Lafayette County, Mississippi. It was built in 1985, so it is 40 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 200 vehicles a day, roughly 5% of them trucks, projected to reach 300 by 2041. The structure is 69 ft (21 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesCo.Road 251
Crosses851 over Relief Opening
LocationSec 10 T 8S R 1W B
RouteCounty Highway 851
Coordinates34.39381, -89.28288
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 protection7 GoodSome minor problems.
Last inspectionFebruary 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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.2 US tons
Inventory rating46.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length69 ft (21 m)
Longest span31 ft (9.4 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2021)
Projected traffic300 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Co.Road 251 over 851 over Relief Opening built?

It was built in 1985, making it 40 years old in 2025.

What condition is Co.Road 251 over 851 over Relief Opening 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 February 2023.

How much traffic does Co.Road 251 over 851 over Relief Opening carry?

About 200 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Co.Road 251 over 851 over Relief Opening?

The structure is 69 ft (21 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.

Who owns Co.Road 251 over 851 over Relief Opening?

It is owned by the County Highway Agency.