US Bridges

Is 635 S over Drain Dtch

Good

Platte County, Missouri · S 8 T 50 N R 33 W · Structure no. 2430

Built
1973
52 years old, rebuilt 2006
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
122 ft
3 main spans
Daily traffic
26,309
2024 count
Owner
State
State Highway Agency

About this bridge

Is 635 S over Drain Dtch is a concrete continuous slab carrying Is 635 S over Drain Dtch in Platte County, Missouri. It was built in 1973 and reconstructed in 2006, so it is 52 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 26,309 vehicles a day, roughly 18% of them trucks, projected to reach 53,933 by 2044. The structure is 122 ft (37.3 m) long and 53 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 635 S
CrossesDrain Dtch
LocationS 8 T 50 N R 33 W
RouteInterstate 635
Coordinates39.16083, -94.63204
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating38.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length122 ft (37.3 m)
Longest span48 ft (14.6 m)
Deck width53 ft (16.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,309 (2024)
Projected traffic53,933 by 2044
Trucks18%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 635 S over Drain Dtch built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2006.

What condition is Is 635 S over Drain Dtch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Is 635 S over Drain Dtch carry?

About 26,309 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 635 S over Drain Dtch?

The structure is 122 ft (37.3 m) long with a longest span of 48 ft (14.6 m) and a deck 53 ft wide.

Who owns Is 635 S over Drain Dtch?

It is owned by the State Highway Agency.