US Bridges

Nfa A353 over Salt Lick Creek

FairPosted for load

Macon County, Tennessee · In Red Boiling Springs · Structure no. 560A3530001

Built
1960
65 years old, rebuilt 2006
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
2 main spans
Daily traffic
230
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A353 over Salt Lick Creek is a steel stringer/multi-beam or girder carrying Nfa A353 over Salt Lick Creek in Macon County, Tennessee. It was built in 1960 and reconstructed in 2006, so it is 65 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. Its operating status is: posted for load restriction.

It carries about 230 vehicles a day, roughly 4% of them trucks, projected to reach 368 by 2042. The structure is 60 ft (18.3 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNfa A353
CrossesSalt Lick Creek
LocationIn Red Boiling Springs
RouteCity Street 353
CountyMacon County
StateTennessee
Coordinates36.53257, -85.84935
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.1 US tons
Inventory rating9.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans2
Design loadH 10
Structure length60 ft (18.3 m)
Longest span29 ft (8.8 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deck10 ft (3.2 m)

Traffic and service

Average daily traffic230 (2020)
Projected traffic368 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$745,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A353 over Salt Lick Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2006.

What condition is Nfa A353 over Salt Lick Creek 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 Nfa A353 over Salt Lick Creek carry?

About 230 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A353 over Salt Lick Creek?

The structure is 60 ft (18.3 m) long with a longest span of 29 ft (8.8 m) and a deck 20 ft wide.

Who owns Nfa A353 over Salt Lick Creek?

It is owned by the City or Municipal Highway Agency.