US Bridges

Nfa A174 over Watson Branch

Fair

Williamson County, Tennessee · 2.7 MI SE JCT SR6&SR96 · Structure no. 940A1740001

Built
1970
55 years old, rebuilt 2000
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
1,750
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nfa A174 over Watson Branch is a concrete continuous culvert carrying Nfa A174 over Watson Branch in Williamson County, Tennessee. It was built in 1970 and reconstructed in 2000, so it is 55 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 1,750 vehicles a day, roughly 2% of them trucks, projected to reach 2,800 by 2041. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 61.5 mi (99 km).

Location

Open in Google Maps
CarriesNfa A174
CrossesWatson Branch
Location2.7 MI SE JCT SR6&SR96
RouteCity Street 174
CountyWilliamson County
StateTennessee
Coordinates35.90653, -86.82597
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length26 ft (7.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (2020)
Projected traffic2,800 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed61.5 mi (99 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$227,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A174 over Watson Branch built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2000.

What condition is Nfa A174 over Watson Branch 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 A174 over Watson Branch carry?

About 1,750 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A174 over Watson Branch?

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

Who owns Nfa A174 over Watson Branch?

It is owned by the City or Municipal Highway Agency.