US Bridges

Is 635 S over Missouri Rvr UP RR

FairPosted for load

Platte County, Missouri · S 18 T 50 N R 33 W · Structure no. 1493

Built
1976
49 years old, rebuilt 2012
Condition
Fair
inspected August 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
1,614 ft
6 main spans
Daily traffic
56,619
2024 count
Owner
State
State Highway Agency

About this bridge

Is 635 S over Missouri Rvr UP RR is a steel continuous girder and floorbeam system carrying Is 635 S over Missouri Rvr UP RR in Platte County, Missouri. It was built in 1976 and reconstructed in 2012, so it is 49 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 56,619 vehicles a day, roughly 18% of them trucks, projected to reach 116,069 by 2044. The structure is 1,614 ft (491.9 m) long and 80 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 635 S
CrossesMissouri Rvr UP RR
LocationS 18 T 50 N R 33 W
RouteInterstate 635
Coordinates39.15596, -94.64952
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length1,614 ft (491.9 m)
Longest span425 ft (129.5 m)
Deck width80 ft (24.4 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56,619 (2024)
Projected traffic116,069 by 2044
Trucks18%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Is 635 S over Missouri Rvr UP RR built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2012.

What condition is Is 635 S over Missouri Rvr UP RR 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 August 2023.

How much traffic does Is 635 S over Missouri Rvr UP RR carry?

About 56,619 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is Is 635 S over Missouri Rvr UP RR?

The structure is 1,614 ft (491.9 m) long with a longest span of 425 ft (129.5 m) and a deck 80 ft wide.

Who owns Is 635 S over Missouri Rvr UP RR?

It is owned by the State Highway Agency.