US Bridges

Nfa 1246 (sa 0517) over Branch

FairPosted for load

Blount County, Tennessee · 5.5 M. Ne. Maryville. · Structure no. 05S24980003

Built
1920
105 years old, rebuilt 1930
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
3,992
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1246 (sa 0517) over Branch is a concrete continuous culvert carrying Nfa 1246 (sa 0517) over Branch in Blount County, Tennessee. It was built in 1920 and reconstructed in 1930, so it is 105 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 3,992 vehicles a day, roughly 3% of them trucks, projected to reach 6,074 by 2042. The structure is 35 ft (10.7 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa 1246 (sa 0517)
CrossesBranch
Location5.5 M. Ne. Maryville.
RouteCounty Highway 1246
CountyBlount County
StateTennessee
Coordinates35.80925, -83.87677
Functional classRural Major 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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length35 ft (10.7 m)
Longest span14 ft (4.3 m)
Deck width31 ft (9.5 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,992 (2021)
Projected traffic6,074 by 2042
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$683,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1246 (sa 0517) over Branch built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1930.

What condition is Nfa 1246 (sa 0517) over 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 December 2023.

How much traffic does Nfa 1246 (sa 0517) over Branch carry?

About 3,992 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1246 (sa 0517) over Branch?

The structure is 35 ft (10.7 m) long with a longest span of 14 ft (4.3 m) and a deck 31 ft wide.

Who owns Nfa 1246 (sa 0517) over Branch?

It is owned by the County Highway Agency.