US Bridges

Nfa A633 over Branch

Good

Roane County, Tennessee · W of SR322 near Loudon CO · Structure no. 730A6330001

Built
2017
8 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
23 ft
1 main span
Daily traffic
250
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A633 over Branch is a concrete culvert carrying Nfa A633 over Branch in Roane County, Tennessee. It was built in 2017, so it is 8 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 250 vehicles a day, roughly 2% of them trucks, projected to reach 400 by 2041. The structure is 23 ft (6.9 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesNfa A633
CrossesBranch
LocationW of SR322 near Loudon CO
RouteCounty Highway 633
CountyRoane County
StateTennessee
Coordinates35.67261, -84.56253
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.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length23 ft (6.9 m)
Longest span20 ft (6.1 m)
Deck width28 ft (8.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2020)
Projected traffic400 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A633 over Branch built?

It was built in 2017, making it 8 years old in 2025.

What condition is Nfa A633 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 April 2023.

How much traffic does Nfa A633 over Branch carry?

About 250 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A633 over Branch?

The structure is 23 ft (6.9 m) long with a longest span of 20 ft (6.1 m) and a deck 28 ft wide.

Who owns Nfa A633 over Branch?

It is owned by the County Highway Agency.