US Bridges

S Boardman RD over Big CR

FairPosted for load

Cass County, Missouri · S 18 T 46 N R 30 W · Structure no. 33870

Built
2010
15 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
92 ft
3 main spans
Daily traffic
279
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

S Boardman RD over Big CR is a steel continuous stringer/multi-beam or girder carrying S Boardman RD over Big CR in Cass County, Missouri. It was built in 2010, so it is 15 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. Its operating status is: posted for load restriction.

It carries about 279 vehicles a day, roughly 10% of them trucks, projected to reach 446 by 2044. The structure is 92 ft (27.9 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS Boardman RD
CrossesBig CR
LocationS 18 T 46 N R 30 W
RouteCounty Highway 99
CountyCass County
StateMissouri
Coordinates38.79686, -94.27953
Functional classUrban Local

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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.7 US tons
Inventory rating29.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length92 ft (27.9 m)
Longest span30 ft (9.1 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic279 (2024)
Projected traffic446 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 S Boardman RD over Big CR built?

It was built in 2010, making it 15 years old in 2025.

What condition is S Boardman RD over Big 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 April 2023.

How much traffic does S Boardman RD over Big CR carry?

About 279 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is S Boardman RD over Big CR?

The structure is 92 ft (27.9 m) long with a longest span of 30 ft (9.1 m) and a deck 25 ft wide.

Who owns S Boardman RD over Big CR?

It is owned by the City or Municipal Highway Agency.