US Bridges

Nfa A137 (sa 4505) over Piedmont Branch

Fair

Jefferson County, Tennessee · .06 M NE of SR 9 · Structure no. 45S24130001

Built
1940
85 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
31 ft
1 main span
Daily traffic
940
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A137 (sa 4505) over Piedmont Branch is a concrete tee beam carrying Nfa A137 (sa 4505) over Piedmont Branch in Jefferson County, Tennessee. It was built in 1940, so it is 85 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 940 vehicles a day, roughly 2% of them trucks, projected to reach 1,504 by 2041. The structure is 31 ft (9.5 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A137 (sa 4505)
CrossesPiedmont Branch
Location.06 M NE of SR 9
RouteCounty Highway 137
CountyJefferson County
StateTennessee
Coordinates36.0218, -83.5321
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length31 ft (9.5 m)
Longest span27 ft (8.2 m)
Deck width24 ft (7.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic940 (2020)
Projected traffic1,504 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$524,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A137 (sa 4505) over Piedmont Branch built?

It was built in 1940, making it 85 years old in 2025.

What condition is Nfa A137 (sa 4505) over Piedmont Branch 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 May 2023.

How much traffic does Nfa A137 (sa 4505) over Piedmont Branch carry?

About 940 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A137 (sa 4505) over Piedmont Branch?

The structure is 31 ft (9.5 m) long with a longest span of 27 ft (8.2 m) and a deck 24 ft wide.

Who owns Nfa A137 (sa 4505) over Piedmont Branch?

It is owned by the County Highway Agency.