US Bridges

Nfa B623 over Branch

Good

Montgomery County, Tennessee · 0.3 M From. SR 12 · Structure no. 630B6230001

Built
2015
10 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
750
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa B623 over Branch is a concrete continuous culvert carrying Nfa B623 over Branch in Montgomery 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 750 vehicles a day, roughly 9% of them trucks, projected to reach 1,200 by 2040. The structure is 22 ft (6.8 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNfa B623
CrossesBranch
Location0.3 M From. SR 12
RouteCounty Highway 0B623
CountyMontgomery County
StateTennessee
Coordinates36.50635, -87.36432
Functional classUrban 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2020)
Projected traffic1,200 by 2040
Trucks9%
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

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 B623 over Branch built?

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

What condition is Nfa B623 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 October 2024.

How much traffic does Nfa B623 over Branch carry?

About 750 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is Nfa B623 over Branch?

The structure is 22 ft (6.8 m) long with a longest span of 10 ft (3 m).

Who owns Nfa B623 over Branch?

It is owned by the County Highway Agency.