US Bridges

Is 29 N over Rp MO210E to IS29N Rp

FairPosted for load

Clay County, Missouri · S 13 T 50 N R 33 W · Structure no. 6680

Built
1953
72 years old, rebuilt 2009
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
246 ft
4 main spans
Daily traffic
54,153
2024 count
Owner
State
State Highway Agency

About this bridge

Is 29 N over Rp MO210E to IS29N Rp is a steel continuous stringer/multi-beam or girder carrying Is 29 N over Rp MO210E to IS29N Rp in Clay County, Missouri. It was built in 1953 and reconstructed in 2009, so it is 72 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 54,153 vehicles a day, roughly 7% of them trucks, projected to reach 97,475 by 2044. The structure is 246 ft (75 m) long and 72 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 29 N
CrossesRp MO210E to IS29N Rp
LocationS 13 T 50 N R 33 W
RouteInterstate 29
CountyClay County
StateMissouri
Coordinates39.14481, -94.56145
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating32.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length246 ft (75 m)
Longest span70 ft (21.3 m)
Deck width72 ft (22 m)
Roadway width69 ft (21.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54,153 (2024)
Projected traffic97,475 by 2044
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 29 N over Rp MO210E to IS29N Rp built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 2009.

What condition is Is 29 N over Rp MO210E to IS29N Rp 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 September 2024.

How much traffic does Is 29 N over Rp MO210E to IS29N Rp carry?

About 54,153 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Is 29 N over Rp MO210E to IS29N Rp?

The structure is 246 ft (75 m) long with a longest span of 70 ft (21.3 m) and a deck 72 ft wide.

Who owns Is 29 N over Rp MO210E to IS29N Rp?

It is owned by the State Highway Agency.