US Bridges

SR 310 over Blackwater Creek

Fair

Lafayette County, Mississippi · 8.2 MI E Panola Cl · Structure no. 310031003605290

Built
1999
26 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
400 ft
10 main spans
Daily traffic
720
2023 count
Owner
State
State Highway Agency

About this bridge

SR 310 over Blackwater Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 310 over Blackwater Creek in Lafayette County, Mississippi. It was built in 1999, so it is 26 years old, younger 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 720 vehicles a day, roughly 11% of them trucks, projected to reach 740 by 2043. The structure is 400 ft (122 m) long and 43 ft wide. If it were closed, the detour would be 55.3 mi (89 km).

Location

Open in Google Maps
CarriesSR 310
CrossesBlackwater Creek
Location8.2 MI E Panola Cl
RouteState Highway 310
CountyLafayette County
StateMississippi
Coordinates34.54896, -89.60218
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating37.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length400 ft (122 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic720 (2023)
Projected traffic740 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.3 mi (89 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 310 over Blackwater Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is SR 310 over Blackwater 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 February 2023.

How much traffic does SR 310 over Blackwater Creek carry?

About 720 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 310 over Blackwater Creek?

The structure is 400 ft (122 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns SR 310 over Blackwater Creek?

It is owned by the State Highway Agency.