US Bridges

SR 27 over Cnic RR

Fair

Copiah County, Mississippi · 0.5 MI E SR 51 · Structure no. 310002701508240

Built
1959
66 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
187 ft
1 main span
Daily traffic
10,000
2023 count
Owner
State
State Highway Agency

About this bridge

SR 27 over Cnic RR is a prestressed concrete stringer/multi-beam or girder carrying SR 27 over Cnic RR in Copiah County, Mississippi. It was built in 1959, so it is 66 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.

It carries about 10,000 vehicles a day, roughly 16% of them trucks, projected to reach 12,000 by 2043. The structure is 187 ft (57 m) long and 31 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesSR 27
CrossesCnic RR
Location0.5 MI E SR 51
RouteState Highway 27
CountyCopiah County
StateMississippi
Coordinates32.00765, -90.34693
Functional classUrban Other Principal Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.8 US tons
Inventory rating42.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length187 ft (57 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2023)
Projected traffic12,000 by 2043
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$343 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 27 over Cnic RR built?

It was built in 1959, making it 66 years old in 2025.

What condition is SR 27 over Cnic RR 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 September 2024.

How much traffic does SR 27 over Cnic RR carry?

About 10,000 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SR 27 over Cnic RR?

The structure is 187 ft (57 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns SR 27 over Cnic RR?

It is owned by the State Highway Agency.