US Bridges

Co.Road 387 over 844 over Relief Opening

Fair

Lafayette County, Mississippi · Sec 8 T10S R 4W B · Structure no. SA3600000000174

Built
1971
54 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
160 ft
4 main spans
Daily traffic
930
2022 count
Owner
County
County Highway Agency

About this bridge

Co.Road 387 over 844 over Relief Opening is a prestressed concrete stringer/multi-beam or girder carrying Co.Road 387 over 844 over Relief Opening in Lafayette County, Mississippi. It was built in 1971, so it is 54 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 930 vehicles a day, roughly 4% of them trucks, projected to reach 1,395 by 2042. The structure is 160 ft (48.8 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesCo.Road 387
Crosses844 over Relief Opening
LocationSec 8 T10S R 4W B
RouteCounty Highway 844
CountyLafayette County
StateMississippi
Coordinates34.22495, -89.64484
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic930 (2022)
Projected traffic1,395 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed8.7 mi (14 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Co.Road 387 over 844 over Relief Opening built?

It was built in 1971, making it 54 years old in 2025.

What condition is Co.Road 387 over 844 over Relief Opening 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 Co.Road 387 over 844 over Relief Opening carry?

About 930 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Co.Road 387 over 844 over Relief Opening?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns Co.Road 387 over 844 over Relief Opening?

It is owned by the County Highway Agency.