US Bridges

Is 29 S over Cst N Tiffany Springs Pk

FairPosted for load

Platte County, Missouri · S 36 T 52 N R 34 W · Structure no. 1969

Built
1968
57 years old, rebuilt 1985
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
183 ft
4 main spans
Daily traffic
33,447
2024 count
Owner
State
State Highway Agency

About this bridge

Is 29 S over Cst N Tiffany Springs Pk is a concrete continuous slab carrying Is 29 S over Cst N Tiffany Springs Pk in Platte County, Missouri. It was built in 1968 and reconstructed in 1985, so it is 57 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 33,447 vehicles a day, roughly 6% of them trucks, projected to reach 68,566 by 2044. The structure is 183 ft (55.8 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 29 S
CrossesCst N Tiffany Springs Pk
LocationS 36 T 52 N R 34 W
RouteInterstate 29
Coordinates39.27345, -94.66956
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.
Substructure7 GoodSome minor problems.
Last inspectionOctober 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length183 ft (55.8 m)
Longest span54 ft (16.5 m)
Deck width52 ft (15.8 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33,447 (2024)
Projected traffic68,566 by 2044
Trucks6%
Lanes on structure3
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.7 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 29 S over Cst N Tiffany Springs Pk built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1985.

What condition is Is 29 S over Cst N Tiffany Springs Pk 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 29 S over Cst N Tiffany Springs Pk carry?

About 33,447 vehicles per day (2024 count), of which roughly 6% are trucks.

How long is Is 29 S over Cst N Tiffany Springs Pk?

The structure is 183 ft (55.8 m) long with a longest span of 54 ft (16.5 m) and a deck 52 ft wide.

Who owns Is 29 S over Cst N Tiffany Springs Pk?

It is owned by the State Highway Agency.