US Bridges

Nfa A616 over Donaho Branch

Good

Sumner County, Tennessee · In City of Portland · Structure no. 830A6160001

Built
1990
35 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
460
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A616 over Donaho Branch is a concrete continuous culvert carrying Nfa A616 over Donaho Branch in Sumner County, Tennessee. It was built in 1990, so it is 35 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 460 vehicles a day, roughly 6% of them trucks, projected to reach 736 by 2041. The structure is 26 ft (7.9 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNfa A616
CrossesDonaho Branch
LocationIn City of Portland
RouteCity Street 0A616
Coordinates36.5817, -86.51788
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width35 ft (10.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic460 (2020)
Projected traffic736 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 A616 over Donaho Branch built?

It was built in 1990, making it 35 years old in 2025.

What condition is Nfa A616 over Donaho 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 January 2025.

How much traffic does Nfa A616 over Donaho Branch carry?

About 460 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is Nfa A616 over Donaho Branch?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m) and a deck 35 ft wide.

Who owns Nfa A616 over Donaho Branch?

It is owned by the City or Municipal Highway Agency.