US Bridges

Nfa A056 over Smith Hollow Branch

Good

Smith County, Tennessee · 1.5 MI NW of SR85 · Structure no. 800A0560001

Built
2011
14 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
110
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A056 over Smith Hollow Branch is a concrete continuous culvert carrying Nfa A056 over Smith Hollow Branch in Smith County, Tennessee. It was built in 2011, so it is 14 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 110 vehicles a day, roughly 2% of them trucks, projected to reach 176 by 2042. The structure is 26 ft (7.8 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A056
CrossesSmith Hollow Branch
Location1.5 MI NW of SR85
RouteCounty Highway 56
CountySmith County
StateTennessee
Coordinates36.39317, -85.86916
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length26 ft (7.8 m)
Longest span12 ft (3.7 m)
Deck width24 ft (7.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2020)
Projected traffic176 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$88,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A056 over Smith Hollow Branch built?

It was built in 2011, making it 14 years old in 2025.

What condition is Nfa A056 over Smith Hollow 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 June 2023.

How much traffic does Nfa A056 over Smith Hollow Branch carry?

About 110 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A056 over Smith Hollow Branch?

The structure is 26 ft (7.8 m) long with a longest span of 12 ft (3.7 m) and a deck 24 ft wide.

Who owns Nfa A056 over Smith Hollow Branch?

It is owned by the County Highway Agency.