US Bridges

Rp NW Gateway Ave over Is 29 Rp IS635N to IS29

FairPosted for load

Platte County, Missouri · S 23 T 51 N R 33 W · Structure no. 6434

Built
1957
68 years old, rebuilt 1985
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
601 ft
7 main spans
Daily traffic
4,946
2024 count
Owner
State
State Highway Agency

About this bridge

Rp NW Gateway Ave over Is 29 Rp IS635N to IS29 is a steel continuous stringer/multi-beam or girder carrying Rp NW Gateway Ave over Is 29 Rp IS635N to IS29 in Platte County, Missouri. It was built in 1957 and reconstructed in 1985, so it is 68 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 4,946 vehicles a day, roughly 5% of them trucks, projected to reach 10,139 by 2044. The structure is 601 ft (183.2 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesRp NW Gateway Ave
CrossesIs 29 Rp IS635N to IS29
LocationS 23 T 51 N R 33 W
RouteState Highway 0
CountyPlatte County
StateMissouri
Coordinates39.19017, -94.6135
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 inspectionAugust 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 geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7 (+3 approach)
Design loadH 20
Structure length601 ft (183.2 m)
Longest span93 ft (28.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,946 (2024)
Projected traffic10,139 by 2044
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.9 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rp NW Gateway Ave over Is 29 Rp IS635N to IS29 built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1985.

What condition is Rp NW Gateway Ave over Is 29 Rp IS635N to IS29 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 Rp NW Gateway Ave over Is 29 Rp IS635N to IS29 carry?

About 4,946 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Rp NW Gateway Ave over Is 29 Rp IS635N to IS29?

The structure is 601 ft (183.2 m) long with a longest span of 93 ft (28.4 m) and a deck 33 ft wide.

Who owns Rp NW Gateway Ave over Is 29 Rp IS635N to IS29?

It is owned by the State Highway Agency.