US Bridges

Mo 291 S over Is 435

Fair

Clay County, Missouri · S 21 T 52 N R 32 W · Structure no. 2789

Built
1981
44 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
289 ft
2 main spans
Daily traffic
24,293
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 291 S over Is 435 is a steel continuous stringer/multi-beam or girder carrying Mo 291 S over Is 435 in Clay County, Missouri. It was built in 1981, so it is 44 years old, younger 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 24,293 vehicles a day, roughly 7% of them trucks, projected to reach 38,869 by 2044. The structure is 289 ft (88.1 m) long and 89 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMo 291 S
CrossesIs 435
LocationS 21 T 52 N R 32 W
RouteState Highway 291
CountyClay County
StateMissouri
Coordinates39.30329, -94.51011
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating37.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length289 ft (88.1 m)
Longest span125 ft (38.1 m)
Deck width89 ft (27 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,293 (2024)
Projected traffic38,869 by 2044
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 435 built?

It was built in 1981, making it 44 years old in 2025.

What condition is Mo 291 S over Is 435 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 Mo 291 S over Is 435 carry?

About 24,293 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Mo 291 S over Is 435?

The structure is 289 ft (88.1 m) long with a longest span of 125 ft (38.1 m) and a deck 89 ft wide.

Who owns Mo 291 S over Is 435?

It is owned by the State Highway Agency.