US Bridges

Mo 291 S over Is 470

Fair

Jackson County, Missouri · S 29 T 48 N R 31 W · Structure no. 1802

Built
1979
46 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
273 ft
3 main spans
Daily traffic
12,030
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 291 S over Is 470 is a steel continuous stringer/multi-beam or girder carrying Mo 291 S over Is 470 in Jackson 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.

It carries about 12,030 vehicles a day, roughly 3% of them trucks, projected to reach 16,241 by 2044. The structure is 273 ft (83.2 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMo 291 S
CrossesIs 470
LocationS 29 T 48 N R 31 W
RouteState Highway 291
Coordinates38.94908, -94.36139
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating42.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length273 ft (83.2 m)
Longest span131 ft (39.9 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,030 (2024)
Projected traffic16,241 by 2044
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mo 291 S over Is 470 built?

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

What condition is Mo 291 S over Is 470 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 November 2023.

How much traffic does Mo 291 S over Is 470 carry?

About 12,030 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Mo 291 S over Is 470?

The structure is 273 ft (83.2 m) long with a longest span of 131 ft (39.9 m) and a deck 43 ft wide.

Who owns Mo 291 S over Is 470?

It is owned by the State Highway Agency.