US Bridges

Nfa 917 (sa 9104) over Tilley Branch

Good

Wayne County, Tennessee · 2.6 M JCT SR203&NFA 917 · Structure no. 91S62270029

Built
1985
40 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
77
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 917 (sa 9104) over Tilley Branch is a concrete continuous culvert carrying Nfa 917 (sa 9104) over Tilley Branch in Wayne County, Tennessee. It was built in 1985, so it is 40 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 77 vehicles a day, roughly 3% of them trucks, projected to reach 176 by 2042. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNfa 917 (sa 9104)
CrossesTilley Branch
Location2.6 M JCT SR203&NFA 917
RouteCounty Highway 917
CountyWayne County
StateTennessee
Coordinates35.19332, -87.94862
Functional classRural Minor Collector

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 inspectionNovember 2024
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 rating54.7 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span10 ft (3 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77 (2021)
Projected traffic176 by 2042
Trucks3%
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$40,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 917 (sa 9104) over Tilley Branch built?

It was built in 1985, making it 40 years old in 2025.

What condition is Nfa 917 (sa 9104) over Tilley 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 November 2024.

How much traffic does Nfa 917 (sa 9104) over Tilley Branch carry?

About 77 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 917 (sa 9104) over Tilley Branch?

The structure is 26 ft (7.9 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns Nfa 917 (sa 9104) over Tilley Branch?

It is owned by the County Highway Agency.