US Bridges

Nfa A473 731250F over Southern Railway

Fair

Greene County, Tennessee · .5 M N of 11E at Tusculum · Structure no. 300A4730001

Built
1970
55 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
181 ft
3 main spans
Daily traffic
720
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A473 731250F over Southern Railway is a prestressed concrete continuous stringer/multi-beam or girder carrying Nfa A473 731250F over Southern Railway in Greene County, Tennessee. It was built in 1970, so it is 55 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 720 vehicles a day, roughly 2% of them trucks, projected to reach 1,152 by 2042. The structure is 181 ft (55.3 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa A473 731250F
CrossesSouthern Railway
Location.5 M N of 11E at Tusculum
RouteCity Street 473
CountyGreene County
StateTennessee
Coordinates36.19378, -82.74554
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
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 rating57.5 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length181 ft (55.3 m)
Longest span69 ft (21 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic720 (2020)
Projected traffic1,152 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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$1.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nfa A473 731250F over Southern Railway built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nfa A473 731250F 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 February 2023.

How much traffic does Nfa A473 731250F over Southern Railway carry?

About 720 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A473 731250F over Southern Railway?

The structure is 181 ft (55.3 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns Nfa A473 731250F over Southern Railway?

It is owned by the City or Municipal Highway Agency.