US Bridges

Is 35 N over Is 70

Fair

Jackson County, Missouri · S 32 T 50 N R 33 W · Structure no. 32251

Built
1958
67 years old, rebuilt 1984
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
232 ft
3 main spans
Daily traffic
12,733
2024 count
Owner
State
State Highway Agency

About this bridge

Is 35 N over Is 70 is a concrete continuous box beam or girders - single or spread carrying Is 35 N over Is 70 in Jackson County, Missouri. It was built in 1958 and reconstructed in 1984, 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 5 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 12,733 vehicles a day, roughly 18% of them trucks, projected to reach 17,190 by 2044. The structure is 232 ft (70.6 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesIs 35 N
CrossesIs 70
LocationS 32 T 50 N R 33 W
RouteInterstate 35
CountyJackson County
StateMissouri
Coordinates39.10627, -94.57197
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length232 ft (70.6 m)
Longest span97 ft (29.6 m)
Deck width26 ft (7.9 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,733 (2024)
Projected traffic17,190 by 2044
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 35 N over Is 70 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1984.

What condition is Is 35 N over Is 70 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 35 N over Is 70 carry?

About 12,733 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 35 N over Is 70?

The structure is 232 ft (70.6 m) long with a longest span of 97 ft (29.6 m) and a deck 26 ft wide.

Who owns Is 35 N over Is 70?

It is owned by the State Highway Agency.