US Bridges

Is 229 N over Cst 22nd ST

FairPosted for load

Buchanan County, Missouri · S 28 T 57 N R 35 W · Structure no. 1235

Built
1979
46 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
207 ft
3 main spans
Daily traffic
4,623
2024 count
Owner
State
State Highway Agency

About this bridge

Is 229 N over Cst 22nd ST is a steel continuous stringer/multi-beam or girder carrying Is 229 N over Cst 22nd ST in Buchanan County, Missouri. It was built in 1979, so it is 46 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 6 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 4,623 vehicles a day, roughly 7% of them trucks, projected to reach 7,859 by 2044. The structure is 207 ft (63.1 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 229 N
CrossesCst 22nd ST
LocationS 28 T 57 N R 35 W
RouteInterstate 229
CountyBuchanan County
StateMissouri
Coordinates39.72181, -94.83369
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being 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 typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length207 ft (63.1 m)
Longest span91 ft (27.6 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,623 (2024)
Projected traffic7,859 by 2044
Trucks7%
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 22nd ST built?

It was built in 1979, making it 46 years old in 2025.

What condition is Is 229 N over Cst 22nd ST 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 2024.

How much traffic does Is 229 N over Cst 22nd ST carry?

About 4,623 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Is 229 N over Cst 22nd ST?

The structure is 207 ft (63.1 m) long with a longest span of 91 ft (27.6 m) and a deck 40 ft wide.

Who owns Is 229 N over Cst 22nd ST?

It is owned by the State Highway Agency.