US Bridges

US 61 over Cnic RR

Good

Adams County, Mississippi · 1.1 MI N US 84 West · Structure no. 21000610010434B

Built
1963
62 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
160 ft
1 main span
Daily traffic
12,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 61 over Cnic RR is a prestressed concrete stringer/multi-beam or girder carrying US 61 over Cnic RR in Adams County, Mississippi. It was built in 1963, so it is 62 years old, older than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,000 vehicles a day, roughly 8% of them trucks, projected to reach 12,000 by 2043. The structure is 160 ft (48.8 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 61
CrossesCnic RR
Location1.1 MI N US 84 West
RouteU.S. Route 61
Coordinates31.54023, -91.37697
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating32.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+4 approach)
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2023)
Projected traffic12,000 by 2043
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$336 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 61 over Cnic RR built?

It was built in 1963, making it 62 years old in 2025.

What condition is US 61 over Cnic RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does US 61 over Cnic RR carry?

About 12,000 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 61 over Cnic RR?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns US 61 over Cnic RR?

It is owned by the State Highway Agency.