US Bridges

Nfa 1298 (sa 4512) over Piedmont Branch

FairPosted for load

Jefferson County, Tennessee · N Off US70 - W of JCT 140 · Structure no. 45S24130003

Built
1940
85 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
26 ft
1 main span
Daily traffic
1,645
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1298 (sa 4512) over Piedmont Branch is a concrete tee beam carrying Nfa 1298 (sa 4512) 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. Its operating status is: posted for load restriction.

It carries about 1,645 vehicles a day, roughly 3% of them trucks, projected to reach 2,344 by 2041. The structure is 26 ft (8 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1298 (sa 4512)
CrossesPiedmont Branch
LocationN Off US70 - W of JCT 140
RouteCounty Highway 1298
CountyJefferson County
StateTennessee
Coordinates36.02367, -83.53118
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 length26 ft (8 m)
Longest span22 ft (6.7 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,645 (2021)
Projected traffic2,344 by 2041
Trucks3%
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 statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$139,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1298 (sa 4512) over Piedmont Branch built?

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

What condition is Nfa 1298 (sa 4512) 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 1298 (sa 4512) over Piedmont Branch carry?

About 1,645 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1298 (sa 4512) over Piedmont Branch?

The structure is 26 ft (8 m) long with a longest span of 22 ft (6.7 m) and a deck 24 ft wide.

Who owns Nfa 1298 (sa 4512) over Piedmont Branch?

It is owned by the County Highway Agency.