US Bridges

I 59 over Cnic RR

Fair

Forrest County, Mississippi · 0.2 MI N US 49 · Structure no. 11000590180671B

Built
1960
65 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
150 ft
5 main spans
Daily traffic
20,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 59 over Cnic RR is a concrete slab carrying I 59 over Cnic RR in Forrest County, Mississippi. It was built in 1960, so it is 65 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 20,000 vehicles a day, roughly 17% of them trucks, projected to reach 25,500 by 2043. The structure is 150 ft (45.7 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 59
CrossesCnic RR
Location0.2 MI N US 49
RouteInterstate 59
CountyForrest County
StateMississippi
Coordinates31.35973, -89.34363
Functional classUrban Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width47 ft (14.3 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2023)
Projected traffic25,500 by 2043
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$300 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 59 over Cnic RR built?

It was built in 1960, making it 65 years old in 2025.

What condition is I 59 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 December 2024.

How much traffic does I 59 over Cnic RR carry?

About 20,000 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is I 59 over Cnic RR?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns I 59 over Cnic RR?

It is owned by the State Highway Agency.