US Bridges

I840 over W Prong Murfress Frk Crk

Good

Williamson County, Tennessee · 7.5 M SE JCT I840 & I65 · Structure no. 94SR8400125

Built
2011
14 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete Continuous
Length
76 ft
3 main spans
Daily traffic
21,372
2021 count
Owner
State
State Highway Agency

About this bridge

I840 over W Prong Murfress Frk Crk is a concrete continuous culvert carrying I840 over W Prong Murfress Frk Crk in Williamson County, Tennessee. It was built in 2011, so it is 14 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 21,372 vehicles a day, roughly 7% of them trucks, projected to reach 31,603 by 2041. The structure is 76 ft (23.1 m) long. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesI840
CrossesW Prong Murfress Frk Crk
Location7.5 M SE JCT I840 & I65
RouteInterstate 840
CountyWilliamson County
StateTennessee
Coordinates35.81473, -86.97832
Functional classRural Principal Arterial - Interstate

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
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 spans3
Design loadHS 20
Structure length76 ft (23.1 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,372 (2021)
Projected traffic31,603 by 2041
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I840 over W Prong Murfress Frk Crk built?

It was built in 2011, making it 14 years old in 2025.

What condition is I840 over W Prong Murfress Frk Crk 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 May 2023.

How much traffic does I840 over W Prong Murfress Frk Crk carry?

About 21,372 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I840 over W Prong Murfress Frk Crk?

The structure is 76 ft (23.1 m) long with a longest span of 18 ft (5.5 m).

Who owns I840 over W Prong Murfress Frk Crk?

It is owned by the State Highway Agency.