US Bridges

NFSR 25 over Longarm Branch

Good

Unicoi County, Tennessee · Longarm Branch · Structure no. 080405000001036

Built
2012
13 years old
Condition
Good
inspected April 2024
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
20 ft
3 main spans
Daily traffic
20
1999 count
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 25 over Longarm Branch is a aluminum, wrought iron, or cast iron culvert carrying NFSR 25 over Longarm Branch in Unicoi County, Tennessee. It was built in 2012, so it is 13 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20 vehicles a day, projected to reach 30 by 2045. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 98.2 mi (158 km).

Location

Open in Google Maps
CarriesNFSR 25
CrossesLongarm Branch
LocationLongarm Branch
RouteFederal Lands Road 25
CountyUnicoi County
StateTennessee
Coordinates36.12667, -82.53694
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating30 US tons
Inventory rating23.3 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans3
Design loadUnknown
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (1999)
Projected traffic30 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NFSR 25 over Longarm Branch built?

It was built in 2012, making it 13 years old in 2025.

What condition is NFSR 25 over Longarm Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does NFSR 25 over Longarm Branch carry?

About 20 vehicles per day (1999 count).

How long is NFSR 25 over Longarm Branch?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m).

Who owns NFSR 25 over Longarm Branch?

It is owned by the U.S. Forest Service.