US Bridges

FAU 4745 over Watson Branch

Good

Williamson County, Tennessee · 2.9 MI SE JCT SR6&SR96 · Structure no. 940A1750001

Built
1965
60 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
13,323
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

FAU 4745 over Watson Branch is a concrete continuous culvert carrying FAU 4745 over Watson Branch in Williamson County, Tennessee. It was built in 1965, so it is 60 years old, older 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 13,323 vehicles a day, roughly 3% of them trucks, projected to reach 18,531 by 2041. The structure is 24 ft (7.3 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesFAU 4745
CrossesWatson Branch
Location2.9 MI SE JCT SR6&SR96
RouteCity Street 4745
CountyWilliamson County
StateTennessee
Coordinates35.90705, -86.82445
Functional classUrban 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,323 (2021)
Projected traffic18,531 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$193,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FAU 4745 over Watson Branch built?

It was built in 1965, making it 60 years old in 2025.

What condition is FAU 4745 over Watson 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 July 2023.

How much traffic does FAU 4745 over Watson Branch carry?

About 13,323 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is FAU 4745 over Watson Branch?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m) and a deck 24 ft wide.

Who owns FAU 4745 over Watson Branch?

It is owned by the City or Municipal Highway Agency.