US Bridges

FAU 24 348020B over CSX Railroad

Good

Davidson County, Tennessee · Charlotte Ave @ CSX RR · Structure no. 19010000001

Built
1999
26 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
233 ft
3 main spans
Daily traffic
20,819
2021 count
Owner
State
State Highway Agency

About this bridge

FAU 24 348020B over CSX Railroad is a steel continuous stringer/multi-beam or girder carrying FAU 24 348020B over CSX Railroad in Davidson County, Tennessee. It was built in 1999, so it is 26 years old, younger than the Tennessee average of 47.4 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 20,819 vehicles a day, roughly 9% of them trucks, projected to reach 37,475 by 2041. The structure is 233 ft (71 m) long and 102 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesFAU 24 348020B
CrossesCSX Railroad
LocationCharlotte Ave @ CSX RR
RouteU.S. Route 70
Coordinates36.15475, -86.81395
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating38.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length233 ft (71 m)
Longest span120 ft (36.6 m)
Deck width102 ft (31 m)
Roadway width84 ft (25.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,819 (2021)
Projected traffic37,475 by 2041
Trucks9%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed19.9 mi (32 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 24 348020B over CSX Railroad built?

It was built in 1999, making it 26 years old in 2025.

What condition is FAU 24 348020B over CSX Railroad 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 FAU 24 348020B over CSX Railroad carry?

About 20,819 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAU 24 348020B over CSX Railroad?

The structure is 233 ft (71 m) long with a longest span of 120 ft (36.6 m) and a deck 102 ft wide.

Who owns FAU 24 348020B over CSX Railroad?

It is owned by the State Highway Agency.