US Bridges

US 84 over Cnic RR

Good

Lincoln County, Mississippi · 0.3 MI E US 51 · Structure no. 21000840430642A

Built
1974
51 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
167 ft
3 main spans
Daily traffic
5,500
2023 count
Owner
State
State Highway Agency

About this bridge

US 84 over Cnic RR is a prestressed concrete stringer/multi-beam or girder carrying US 84 over Cnic RR in Lincoln County, Mississippi. It was built in 1974, so it is 51 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,500 vehicles a day, roughly 17% of them trucks, projected to reach 6,000 by 2043. The structure is 167 ft (50.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 84
CrossesCnic RR
Location0.3 MI E US 51
RouteU.S. Route 84
Coordinates31.54668, -90.4545
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.3 US tons
Inventory rating37.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length167 ft (50.9 m)
Longest span55 ft (16.8 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,500 (2023)
Projected traffic6,000 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

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 US 84 over Cnic RR built?

It was built in 1974, making it 51 years old in 2025.

What condition is US 84 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 March 2023.

How much traffic does US 84 over Cnic RR carry?

About 5,500 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US 84 over Cnic RR?

The structure is 167 ft (50.9 m) long with a longest span of 55 ft (16.8 m) and a deck 43 ft wide.

Who owns US 84 over Cnic RR?

It is owned by the State Highway Agency.