US Bridges

Is 229 N over Cst Poulin ST Cst Prosp

Fair

Buchanan County, Missouri · S 5 T 57 N R 35 W · Structure no. 1811

Built
1973
52 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
299 ft
4 main spans
Daily traffic
4,469
2024 count
Owner
State
State Highway Agency

About this bridge

Is 229 N over Cst Poulin ST Cst Prosp is a steel continuous stringer/multi-beam or girder carrying Is 229 N over Cst Poulin ST Cst Prosp in Buchanan County, Missouri. It was built in 1973, 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 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.

It carries about 4,469 vehicles a day, roughly 21% of them trucks, projected to reach 7,597 by 2044. The structure is 299 ft (91.1 m) long and 37 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 229 N
CrossesCst Poulin ST Cst Prosp
LocationS 5 T 57 N R 35 W
RouteInterstate 229
Coordinates39.77446, -94.86211
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.4 US tons
Inventory rating48.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length299 ft (91.1 m)
Longest span89 ft (27.1 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,469 (2024)
Projected traffic7,597 by 2044
Trucks21%
Lanes on structure2
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 229 N over Cst Poulin ST Cst Prosp built?

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

What condition is Is 229 N over Cst Poulin ST Cst Prosp 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 February 2023.

How much traffic does Is 229 N over Cst Poulin ST Cst Prosp carry?

About 4,469 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is Is 229 N over Cst Poulin ST Cst Prosp?

The structure is 299 ft (91.1 m) long with a longest span of 89 ft (27.1 m) and a deck 37 ft wide.

Who owns Is 229 N over Cst Poulin ST Cst Prosp?

It is owned by the State Highway Agency.