US Bridges

Is 635 N over Is 29 Rp IS29N to IS635

Fair

Platte County, Missouri · S 33 T 51 N R 33 W · Structure no. 1384

Built
1967
58 years old, rebuilt 1985
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
394 ft
5 main spans
Daily traffic
24,533
2024 count
Owner
State
State Highway Agency

About this bridge

Is 635 N over Is 29 Rp IS29N to IS635 is a concrete continuous box beam or girders - single or spread carrying Is 635 N over Is 29 Rp IS29N to IS635 in Platte County, Missouri. It was built in 1967 and reconstructed in 1985, so it is 58 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 24,533 vehicles a day, roughly 14% of them trucks, projected to reach 50,293 by 2044. The structure is 394 ft (120.1 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIs 635 N
CrossesIs 29 Rp IS29N to IS635
LocationS 33 T 51 N R 33 W
RouteInterstate 635
CountyPlatte County
StateMissouri
Coordinates39.19114, -94.61566
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 inspectionOctober 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating51.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length394 ft (120.1 m)
Longest span91 ft (27.7 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,533 (2024)
Projected traffic50,293 by 2044
Trucks14%
Lanes on structure1
Traffic directionOne-way traffic
CarriesThird level (interchange)
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 635 N over Is 29 Rp IS29N to IS635 built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1985.

What condition is Is 635 N over Is 29 Rp IS29N to IS635 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 October 2024.

How much traffic does Is 635 N over Is 29 Rp IS29N to IS635 carry?

About 24,533 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is Is 635 N over Is 29 Rp IS29N to IS635?

The structure is 394 ft (120.1 m) long with a longest span of 91 ft (27.7 m) and a deck 35 ft wide.

Who owns Is 635 N over Is 29 Rp IS29N to IS635?

It is owned by the State Highway Agency.