US Bridges

Nfa 1296 (sa 4509) over Piedmont Branch

FairPosted for load

Jefferson County, Tennessee · 3 M NW of US70-I40 JCT · Structure no. 45S24650001

Built
1955
70 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
28 ft
2 main spans
Daily traffic
862
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1296 (sa 4509) over Piedmont Branch is a concrete slab carrying Nfa 1296 (sa 4509) over Piedmont Branch in Jefferson County, Tennessee. It was built in 1955, so it is 70 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 862 vehicles a day, roughly 3% of them trucks, projected to reach 1,021 by 2041. The structure is 28 ft (8.6 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1296 (sa 4509)
CrossesPiedmont Branch
Location3 M NW of US70-I40 JCT
RouteCounty Highway 1296
CountyJefferson County
StateTennessee
Coordinates36.02605, -83.52924
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
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 typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length28 ft (8.6 m)
Longest span13 ft (4.1 m)
Deck width25 ft (7.5 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic862 (2021)
Projected traffic1,021 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$103,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1296 (sa 4509) over Piedmont Branch built?

It was built in 1955, making it 70 years old in 2025.

What condition is Nfa 1296 (sa 4509) 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 1296 (sa 4509) over Piedmont Branch carry?

About 862 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1296 (sa 4509) over Piedmont Branch?

The structure is 28 ft (8.6 m) long with a longest span of 13 ft (4.1 m) and a deck 25 ft wide.

Who owns Nfa 1296 (sa 4509) over Piedmont Branch?

It is owned by the County Highway Agency.