US Bridges

Nfa 1861 over Branch

FairPosted for load

Montgomery County, Tennessee · 3 MI SE Palmyra · Structure no. 63018610005

Built
1960
65 years old, rebuilt 1981
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
648
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1861 over Branch is a steel stringer/multi-beam or girder carrying Nfa 1861 over Branch in Montgomery County, Tennessee. It was built in 1960 and reconstructed in 1981, 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 648 vehicles a day, roughly 1% of them trucks, projected to reach 1,037 by 2042. The structure is 28 ft (8.5 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesNfa 1861
CrossesBranch
Location3 MI SE Palmyra
RouteCounty Highway 1861
CountyMontgomery County
StateTennessee
Coordinates36.40403, -87.43967
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating12.9 US tons
Inventory rating10 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width27 ft (8.1 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic648 (2021)
Projected traffic1,037 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$493,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1861 over Branch built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1981.

What condition is Nfa 1861 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 November 2024.

How much traffic does Nfa 1861 over Branch carry?

About 648 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Nfa 1861 over Branch?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 27 ft wide.

Who owns Nfa 1861 over Branch?

It is owned by the County Highway Agency.