US Bridges

I840 over Branch

Good

Wilson County, Tennessee · 1.2 MI S JCT I40&I840 · Structure no. 95SR8400017

Built
1994
31 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
20,977
2021 count
Owner
State
State Highway Agency

About this bridge

I840 over Branch is a concrete continuous culvert carrying I840 over Branch in Wilson County, Tennessee. It was built in 1994, so it is 31 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 20,977 vehicles a day, roughly 7% of them trucks, projected to reach 33,563 by 2042. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesI840
CrossesBranch
Location1.2 MI S JCT I40&I840
RouteInterstate 840
Coordinates36.16485, -86.35613
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 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 rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,977 (2021)
Projected traffic33,563 by 2042
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$380,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I840 over Branch built?

It was built in 1994, making it 31 years old in 2025.

What condition is I840 over 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 November 2023.

How much traffic does I840 over Branch carry?

About 20,977 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I840 over Branch?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns I840 over Branch?

It is owned by the State Highway Agency.