US Bridges

I840 over C-D Road 1 I840 / I40

Good

Wilson County, Tennessee · 3 MI W JCT I40 & SR10 · Structure no. 95I00400053

Built
1994
31 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
290 ft
2 main spans
Daily traffic
20,977
2021 count
Owner
State
State Highway Agency

About this bridge

I840 over C-D Road 1 I840 / I40 is a steel continuous stringer/multi-beam or girder carrying I840 over C-D Road 1 I840 / I40 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 8 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 290 ft (88.4 m) long and 40 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesI840
CrossesC-D Road 1 I840 / I40
Location3 MI W JCT I40 & SR10
RouteInterstate 840
Coordinates36.18313, -86.35202
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length290 ft (88.4 m)
Longest span175 ft (53.3 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,977 (2021)
Projected traffic33,563 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I840 over C-D Road 1 I840 / I40 built?

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

What condition is I840 over C-D Road 1 I840 / I40 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 October 2023.

How much traffic does I840 over C-D Road 1 I840 / I40 carry?

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

How long is I840 over C-D Road 1 I840 / I40?

The structure is 290 ft (88.4 m) long with a longest span of 175 ft (53.3 m) and a deck 40 ft wide.

Who owns I840 over C-D Road 1 I840 / I40?

It is owned by the State Highway Agency.