US Bridges

I40 over I40 / Bridgewater Rd.

Good

Knox County, Tennessee · .5M N of SR1 · Structure no. 47I00400147

Built
1998
27 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
180 ft
3 main spans
Daily traffic
166,251
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over I40 / Bridgewater Rd. is a prestressed concrete continuous box beam or girders - single or spread carrying I40 over I40 / Bridgewater Rd. in Knox County, Tennessee. It was built in 1998, so it is 27 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 166,251 vehicles a day, roughly 6% of them trucks, projected to reach 330,496 by 2041. The structure is 180 ft (55 m) long and 144 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesI40
CrossesI40 / Bridgewater Rd.
Location.5M N of SR1
RouteInterstate 40
CountyKnox County
StateTennessee
Coordinates35.92263, -84.06942
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length180 ft (55 m)
Longest span102 ft (31.1 m)
Deck width144 ft (43.9 m)
Roadway width140 ft (42.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic166,251 (2021)
Projected traffic330,496 by 2041
Trucks6%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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$5.7 million (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 over I40 / Bridgewater Rd. built?

It was built in 1998, making it 27 years old in 2025.

What condition is I40 over I40 / Bridgewater Rd. 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 2024.

How much traffic does I40 over I40 / Bridgewater Rd. carry?

About 166,251 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I40 over I40 / Bridgewater Rd.?

The structure is 180 ft (55 m) long with a longest span of 102 ft (31.1 m) and a deck 144 ft wide.

Who owns I40 over I40 / Bridgewater Rd.?

It is owned by the State Highway Agency.