US Bridges

FAU 5643 Lf LN over CSX Railroad

GoodPosted for load

Knox County, Tennessee · Frontage-Rd-W of I75 · Structure no. 470E9900004

Built
1981
44 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
170 ft
3 main spans
Daily traffic
22,146
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU 5643 Lf LN over CSX Railroad is a prestressed concrete continuous stringer/multi-beam or girder carrying FAU 5643 Lf LN over CSX Railroad in Knox County, Tennessee. It was built in 1981, so it is 44 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. Its operating status is: posted for load restriction.

It carries about 22,146 vehicles a day, roughly 4% of them trucks, projected to reach 35,680 by 2041. The structure is 170 ft (51.8 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFAU 5643 Lf LN
CrossesCSX Railroad
LocationFrontage-Rd-W of I75
RouteCity Street 5643
CountyKnox County
StateTennessee
Coordinates35.97062, -83.98227
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span62 ft (18.9 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,146 (2021)
Projected traffic35,680 by 2041
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.6 million (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was FAU 5643 Lf LN over CSX Railroad built?

It was built in 1981, making it 44 years old in 2025.

What condition is FAU 5643 Lf LN 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 2024.

How much traffic does FAU 5643 Lf LN over CSX Railroad carry?

About 22,146 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is FAU 5643 Lf LN over CSX Railroad?

The structure is 170 ft (51.8 m) long with a longest span of 62 ft (18.9 m) and a deck 44 ft wide.

Who owns FAU 5643 Lf LN over CSX Railroad?

It is owned by the City or Municipal Highway Agency.