US Bridges

Nfa A601 over Branch

Good

Loudon County, Tennessee · In Philadelphia · Structure no. 530A6010003

Built
2015
10 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
420
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A601 over Branch is a concrete continuous culvert carrying Nfa A601 over Branch in Loudon County, Tennessee. It was built in 2015, so it is 10 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 420 vehicles a day, roughly 2% of them trucks, projected to reach 672 by 2042. The structure is 28 ft (8.5 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa A601
CrossesBranch
LocationIn Philadelphia
RouteCity Street 601
CountyLoudon County
StateTennessee
Coordinates35.6825, -84.40518
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length28 ft (8.5 m)
Longest span14 ft (4.3 m)
Deck width28 ft (8.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic420 (2020)
Projected traffic672 by 2042
Trucks2%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A601 over Branch built?

It was built in 2015, making it 10 years old in 2025.

What condition is Nfa A601 over 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 August 2024.

How much traffic does Nfa A601 over Branch carry?

About 420 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A601 over Branch?

The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m) and a deck 28 ft wide.

Who owns Nfa A601 over Branch?

It is owned by the City or Municipal Highway Agency.