US Bridges

Nfa A135 over Darwin Creek

Good

Trousdale County, Tennessee · City of Hartsville · Structure no. 850A1350003

Built
1984
41 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
3,130
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A135 over Darwin Creek is a concrete continuous culvert carrying Nfa A135 over Darwin Creek in Trousdale County, Tennessee. It was built in 1984, so it is 41 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 3,130 vehicles a day, roughly 5% of them trucks, projected to reach 5,008 by 2041. The structure is 32 ft (9.8 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNfa A135
CrossesDarwin Creek
LocationCity of Hartsville
RouteCity Street 135
CountyTrousdale County
StateTennessee
Coordinates36.39034, -86.15636
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 rating67.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span12 ft (3.7 m)
Deck width31 ft (9.6 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,130 (2020)
Projected traffic5,008 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 A135 over Darwin Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Nfa A135 over Darwin Creek 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 February 2023.

How much traffic does Nfa A135 over Darwin Creek carry?

About 3,130 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Nfa A135 over Darwin Creek?

The structure is 32 ft (9.8 m) long with a longest span of 12 ft (3.7 m) and a deck 31 ft wide.

Who owns Nfa A135 over Darwin Creek?

It is owned by the City or Municipal Highway Agency.