US Bridges

FAP 1 730579N over Southern Railway

Fair

Knox County, Tennessee · 1.6 M S of Knoxville · Structure no. 47SR0010039

Built
1976
49 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
262 ft
4 main spans
Daily traffic
15,842
2021 count
Owner
State
State Highway Agency

About this bridge

FAP 1 730579N over Southern Railway is a prestressed concrete continuous stringer/multi-beam or girder carrying FAP 1 730579N over Southern Railway in Knox County, Tennessee. It was built in 1976, so it is 49 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.

It carries about 15,842 vehicles a day, roughly 9% of them trucks, projected to reach 21,035 by 2042. The structure is 262 ft (80 m) long and 82 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

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CarriesFAP 1 730579N
CrossesSouthern Railway
Location1.6 M S of Knoxville
RouteU.S. Route 11
CountyKnox County
StateTennessee
Coordinates36.02243, -83.8507
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length262 ft (80 m)
Longest span66 ft (20 m)
Deck width82 ft (25.1 m)
Roadway width79 ft (24 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,842 (2021)
Projected traffic21,035 by 2042
Trucks9%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed60.3 mi (97 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 FAP 1 730579N over Southern Railway built?

It was built in 1976, making it 49 years old in 2025.

What condition is FAP 1 730579N over Southern Railway 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 September 2023.

How much traffic does FAP 1 730579N over Southern Railway carry?

About 15,842 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is FAP 1 730579N over Southern Railway?

The structure is 262 ft (80 m) long with a longest span of 66 ft (20 m) and a deck 82 ft wide.

Who owns FAP 1 730579N over Southern Railway?

It is owned by the State Highway Agency.