US Bridges

Nfa B175 over Branch

Fair

Macon County, Tennessee · 3 M N of Eulia · Structure no. 560B1750003

Built
1960
65 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
180
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa B175 over Branch is a concrete continuous culvert carrying Nfa B175 over Branch in Macon County, Tennessee. It was built in 1960, 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 6 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 180 vehicles a day, roughly 7% of them trucks, projected to reach 288 by 2041. The structure is 26 ft (7.9 m) long and 17 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesNfa B175
CrossesBranch
Location3 M N of Eulia
RouteCounty Highway 175
CountyMacon County
StateTennessee
Coordinates36.56958, -86.18207
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating46.4 US tons
Inventory rating28.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width17 ft (5.3 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2020)
Projected traffic288 by 2041
Trucks7%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$136,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa B175 over Branch built?

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

What condition is Nfa B175 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 August 2023.

How much traffic does Nfa B175 over Branch carry?

About 180 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is Nfa B175 over Branch?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 17 ft wide.

Who owns Nfa B175 over Branch?

It is owned by the County Highway Agency.