US Bridges

Is 70 W over Is 29

Fair

Jackson County, Missouri · S 32 T 50 N R 33 W · Structure no. 6606

Built
1958
67 years old, rebuilt 2013
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
11,547
2024 count
Owner
State
State Highway Agency

About this bridge

Is 70 W over Is 29 is a concrete continuous box beam or girders - single or spread carrying Is 70 W over Is 29 in Jackson County, Missouri. It was built in 1958 and reconstructed in 2013, so it is 67 years old, older than the Missouri average of 45.1 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 11,547 vehicles a day, roughly 18% of them trucks, projected to reach 15,588 by 2044. The structure is 150 ft (45.7 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIs 70 W
CrossesIs 29
LocationS 32 T 50 N R 33 W
RouteInterstate 70
CountyJackson County
StateMissouri
Coordinates39.10571, -94.57129
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span65 ft (19.7 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck15 ft (4.4 m)

Traffic and service

Average daily traffic11,547 (2024)
Projected traffic15,588 by 2044
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 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 Is 70 W over Is 29 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2013.

What condition is Is 70 W over Is 29 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 September 2023.

How much traffic does Is 70 W over Is 29 carry?

About 11,547 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 70 W over Is 29?

The structure is 150 ft (45.7 m) long with a longest span of 65 ft (19.7 m) and a deck 35 ft wide.

Who owns Is 70 W over Is 29?

It is owned by the State Highway Agency.