US Bridges

Is 35 S over Cst W 20th ST Cst Ave

FairPosted for load

Jackson County, Missouri · S 7 T 49 N R 34 W · Structure no. 6657

Built
1946
79 years old, rebuilt 2013
Condition
Fair
inspected January 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
2,952 ft
9 main spans
Daily traffic
147,773
2024 count
Owner
State
State Highway Agency

About this bridge

Is 35 S over Cst W 20th ST Cst Ave is a steel continuous girder and floorbeam system carrying Is 35 S over Cst W 20th ST Cst Ave in Jackson County, Missouri. It was built in 1946 and reconstructed in 2013, so it is 79 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. Its operating status is: posted for load restriction.

It carries about 147,773 vehicles a day, roughly 18% of them trucks, projected to reach 199,494 by 2044. The structure is 2,952 ft (899.8 m) long and 114 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 35 S
CrossesCst W 20th ST Cst Ave
LocationS 7 T 49 N R 34 W
RouteInterstate 35
CountyJackson County
StateMissouri
Coordinates39.08595, -94.59236
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.6 US tons
Inventory rating30.8 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9 (+31 approach)
Design loadHS 20
Structure length2,952 ft (899.8 m)
Longest span192 ft (58.5 m)
Deck width114 ft (34.7 m)
Roadway width108 ft (32.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic147,773 (2024)
Projected traffic199,494 by 2044
Trucks18%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed0.6 mi (1 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 35 S over Cst W 20th ST Cst Ave built?

It was built in 1946, making it 79 years old in 2025. It was reconstructed in 2013.

What condition is Is 35 S over Cst W 20th ST Cst Ave 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 January 2023.

How much traffic does Is 35 S over Cst W 20th ST Cst Ave carry?

About 147,773 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 35 S over Cst W 20th ST Cst Ave?

The structure is 2,952 ft (899.8 m) long with a longest span of 192 ft (58.5 m) and a deck 114 ft wide.

Who owns Is 35 S over Cst W 20th ST Cst Ave?

It is owned by the State Highway Agency.