US Bridges

Nfa 1923 (sa 9416) over Little Turnbull Creek

Fair

Williamson County, Tennessee · 3.3 MI W JCT SR96&SR100 · Structure no. 94019230003

Built
1940
85 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
50 ft
1 main span
Daily traffic
1,977
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1923 (sa 9416) over Little Turnbull Creek is a concrete tee beam carrying Nfa 1923 (sa 9416) over Little Turnbull Creek in Williamson County, Tennessee. It was built in 1940, so it is 85 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,977 vehicles a day, roughly 3% of them trucks, projected to reach 2,651 by 2041. The structure is 50 ft (15.2 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesNfa 1923 (sa 9416)
CrossesLittle Turnbull Creek
Location3.3 MI W JCT SR96&SR100
RouteCounty Highway 1923
CountyWilliamson County
StateTennessee
Coordinates35.98822, -87.17215
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span42 ft (12.8 m)
Deck width27 ft (8.1 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,977 (2021)
Projected traffic2,651 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$202,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1923 (sa 9416) over Little Turnbull Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Nfa 1923 (sa 9416) over Little Turnbull Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does Nfa 1923 (sa 9416) over Little Turnbull Creek carry?

About 1,977 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Nfa 1923 (sa 9416) over Little Turnbull Creek?

The structure is 50 ft (15.2 m) long with a longest span of 42 ft (12.8 m) and a deck 27 ft wide.

Who owns Nfa 1923 (sa 9416) over Little Turnbull Creek?

It is owned by the County Highway Agency.