US Bridges

187 ST over West Fk

FairPosted for load

Cass County, Missouri · S 23 T 46 N R 33 W · Structure no. 12642

Built
1910
115 years old, rebuilt 1991
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
1 main span
Daily traffic
230
2024 count
Owner
County
County Highway Agency

About this bridge

187 ST over West Fk is a steel stringer/multi-beam or girder carrying 187 ST over West Fk in Cass County, Missouri. It was built in 1910 and reconstructed in 1991, so it is 115 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 5 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 230 vehicles a day, roughly 5% of them trucks, projected to reach 368 by 2044. The structure is 56 ft (17.1 m) long and 14 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries187 ST
CrossesWest Fk
LocationS 23 T 46 N R 33 W
RouteCounty Highway 16
CountyCass County
StateMissouri
Coordinates38.78563, -94.53612
Functional classUrban Minor 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating68.5 US tons
Inventory rating42.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width14 ft (4.4 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2024)
Projected traffic368 by 2044
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$467,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 187 ST over West Fk built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1991.

What condition is 187 ST over West Fk 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 March 2023.

How much traffic does 187 ST over West Fk carry?

About 230 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is 187 ST over West Fk?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 14 ft wide.

Who owns 187 ST over West Fk?

It is owned by the County Highway Agency.