US Bridges

SR 850 over Cnic RR and Local RD

Fair

Copiah County, Mississippi · 0.1 MI E US 51 · Structure no. 310085001500300

Built
1990
35 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
552 ft
1 main span
Daily traffic
1,100
2023 count
Owner
State
State Highway Agency

About this bridge

SR 850 over Cnic RR and Local RD is a prestressed concrete stringer/multi-beam or girder carrying SR 850 over Cnic RR and Local RD in Copiah County, Mississippi. It was built in 1990, so it is 35 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 1,100 vehicles a day, roughly 11% of them trucks, projected to reach 1,100 by 2043. The structure is 552 ft (168.3 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 850
CrossesCnic RR and Local RD
Location0.1 MI E US 51
RouteState Highway 850
CountyCopiah County
StateMississippi
Coordinates31.68895, -90.40314
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.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+7 approach)
Design loadHS 20
Structure length552 ft (168.3 m)
Longest span90 ft (27.4 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic1,100 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed3.1 mi (5 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 850 over Cnic RR and Local RD built?

It was built in 1990, making it 35 years old in 2025.

What condition is SR 850 over Cnic RR and Local RD 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 August 2024.

How much traffic does SR 850 over Cnic RR and Local RD carry?

About 1,100 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SR 850 over Cnic RR and Local RD?

The structure is 552 ft (168.3 m) long with a longest span of 90 ft (27.4 m) and a deck 35 ft wide.

Who owns SR 850 over Cnic RR and Local RD?

It is owned by the State Highway Agency.