US Bridges

FAP 3 297491X over Cnic Railroad

FairPosted for load

Shelby County, Tennessee · 0.45 Mi. North of SR-300 · Structure no. 79SR0030029

Built
1934
91 years old, rebuilt 2001
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
170 ft
3 main spans
Daily traffic
37,359
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 3 297491X over Cnic Railroad is a steel continuous stringer/multi-beam or girder carrying FAP 3 297491X over Cnic Railroad in Shelby County, Tennessee. It was built in 1934 and reconstructed in 2001, so it is 91 years old, older than the Tennessee average of 47.4 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. Its operating status is: posted for load restriction.

It carries about 37,359 vehicles a day, roughly 9% of them trucks, projected to reach 59,774 by 2042. The structure is 170 ft (51.8 m) long and 54 ft wide. If it were closed, the detour would be 85.1 mi (137 km).

Location

No coordinates are recorded for this structure.

CarriesFAP 3 297491X
CrossesCnic Railroad
Location0.45 Mi. North of SR-300
RouteU.S. Route 51
CountyShelby County
StateTennessee
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20.7 US tons
Inventory rating16.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length170 ft (51.8 m)
Longest span64 ft (19.5 m)
Deck width54 ft (16.5 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,359 (2021)
Projected traffic59,774 by 2042
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed85.1 mi (137 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAP 3 297491X over Cnic Railroad built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 2001.

What condition is FAP 3 297491X over Cnic Railroad 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 January 2025.

How much traffic does FAP 3 297491X over Cnic Railroad carry?

About 37,359 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAP 3 297491X over Cnic Railroad?

The structure is 170 ft (51.8 m) long with a longest span of 64 ft (19.5 m) and a deck 54 ft wide.

Who owns FAP 3 297491X over Cnic Railroad?

It is owned by the State Highway Agency.