US Bridges

FAU 23 299599N over CSX & Cnic RR

Fair

Shelby County, Tennessee · Near SR-57 Junction · Structure no. 79SR0230001

Built
1958
67 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
3,425 ft
6 main spans
Daily traffic
25,485
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 23 299599N over CSX & Cnic RR is a steel continuous stringer/multi-beam or girder carrying FAU 23 299599N over CSX & Cnic RR in Shelby County, Tennessee. It was built in 1958, so it is 67 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 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 25,485 vehicles a day, roughly 9% of them trucks, projected to reach 40,776 by 2042. The structure is 3,425 ft (1,043.9 m) long and 71 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesFAU 23 299599N
CrossesCSX & Cnic RR
LocationNear SR-57 Junction
RouteState Highway 23
CountyShelby County
StateTennessee
Coordinates35.13311, -89.97497
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6 (+72 approach)
Design loadHS 20
Structure length3,425 ft (1,043.9 m)
Longest span88 ft (26.7 m)
Deck width71 ft (21.6 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,485 (2021)
Projected traffic40,776 by 2042
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed14.3 mi (23 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$35.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 23 299599N over CSX & Cnic RR built?

It was built in 1958, making it 67 years old in 2025.

What condition is FAU 23 299599N over CSX & 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 January 2025.

How much traffic does FAU 23 299599N over CSX & Cnic RR carry?

About 25,485 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAU 23 299599N over CSX & Cnic RR?

The structure is 3,425 ft (1,043.9 m) long with a longest span of 88 ft (26.7 m) and a deck 71 ft wide.

Who owns FAU 23 299599N over CSX & Cnic RR?

It is owned by the State Highway Agency.