US Bridges

Is 435 N over Big Blue Rvr

FairPosted for load

Jackson County, Missouri · S 30 T 50 N R 32 W · Structure no. 1380

Built
1968
57 years old, rebuilt 2000
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
884 ft
3 main spans
Daily traffic
39,577
2024 count
Owner
State
State Highway Agency

About this bridge

Is 435 N over Big Blue Rvr is a steel continuous stringer/multi-beam or girder carrying Is 435 N over Big Blue Rvr in Jackson County, Missouri. It was built in 1968 and reconstructed in 2000, so it is 57 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 39,577 vehicles a day, roughly 19% of them trucks, projected to reach 53,429 by 2044. The structure is 884 ft (269.4 m) long and 53 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 435 N
CrossesBig Blue Rvr
LocationS 30 T 50 N R 32 W
RouteInterstate 435
Coordinates39.11875, -94.4894
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.6 US tons
Inventory rating28.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+6 approach)
Design loadHS 20
Structure length884 ft (269.4 m)
Longest span150 ft (45.7 m)
Deck width53 ft (16.1 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,577 (2024)
Projected traffic53,429 by 2044
Trucks19%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 435 N over Big Blue Rvr built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2000.

What condition is Is 435 N over Big Blue Rvr 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 June 2024.

How much traffic does Is 435 N over Big Blue Rvr carry?

About 39,577 vehicles per day (2024 count), of which roughly 19% are trucks.

How long is Is 435 N over Big Blue Rvr?

The structure is 884 ft (269.4 m) long with a longest span of 150 ft (45.7 m) and a deck 53 ft wide.

Who owns Is 435 N over Big Blue Rvr?

It is owned by the State Highway Agency.