US Bridges

Rt Zz N over Walnut CR

Fair

Cass County, Missouri · S 34 T 44 N R 29 W · Structure no. 33756

Built
2011
14 years old
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
110 ft
2 main spans
Daily traffic
87
2024 count
Owner
State
State Highway Agency

About this bridge

Rt Zz N over Walnut CR is a prestressed concrete box beam or girders - multiple carrying Rt Zz N over Walnut CR in Cass County, Missouri. It was built in 2011, so it is 14 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 87 vehicles a day, roughly 10% of them trucks, projected to reach 144 by 2044. The structure is 110 ft (33.6 m) long and 26 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

CarriesRt Zz N
CrossesWalnut CR
LocationS 34 T 44 N R 29 W
RouteState Highway 0ZZ
Coordinates38.5682, -94.10114
Functional classRural Minor Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating34.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length110 ft (33.6 m)
Longest span75 ft (22.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic87 (2024)
Projected traffic144 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt Zz N over Walnut CR built?

It was built in 2011, making it 14 years old in 2025.

What condition is Rt Zz N over Walnut CR 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 Rt Zz N over Walnut CR carry?

About 87 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Rt Zz N over Walnut CR?

The structure is 110 ft (33.6 m) long with a longest span of 75 ft (22.9 m) and a deck 26 ft wide.

Who owns Rt Zz N over Walnut CR?

It is owned by the State Highway Agency.