US Bridges

Nfa 1929 (sa 9424) over Murray Branch

Fair

Williamson County, Tennessee · 2.6 MI NE JCT SR46&SR96 · Structure no. 94019290001

Built
1984
41 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
2,444
2021 count
Owner
County
County Highway Agency

About this bridge

Nfa 1929 (sa 9424) over Murray Branch is a concrete continuous culvert carrying Nfa 1929 (sa 9424) over Murray Branch in Williamson 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 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 2,444 vehicles a day, roughly 5% of them trucks, projected to reach 3,314 by 2041. The structure is 27 ft (8.2 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesNfa 1929 (sa 9424)
CrossesMurray Branch
Location2.6 MI NE JCT SR46&SR96
RouteCounty Highway 1929
CountyWilliamson County
StateTennessee
Coordinates35.9802, -86.93127
Functional classRural Major 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating27.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width30 ft (9.1 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,444 (2021)
Projected traffic3,314 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa 1929 (sa 9424) over Murray Branch built?

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

What condition is Nfa 1929 (sa 9424) over Murray 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 1929 (sa 9424) over Murray Branch carry?

About 2,444 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Nfa 1929 (sa 9424) over Murray Branch?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 30 ft wide.

Who owns Nfa 1929 (sa 9424) over Murray Branch?

It is owned by the County Highway Agency.