US Bridges

CO RD SE 601 over Fk Blackwater Rvr

Poor

Johnson County, Missouri · S 1 T 45 N R 25 W · Structure no. 23801

Built
1992
33 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
3 main spans
Daily traffic
45
2023 count
Owner
County
County Highway Agency

About this bridge

CO RD SE 601 over Fk Blackwater Rvr is a steel stringer/multi-beam or girder carrying CO RD SE 601 over Fk Blackwater Rvr in Johnson County, Missouri. It was built in 1992, so it is 33 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 45 vehicles a day, roughly 10% of them trucks, projected to reach 72 by 2043. The structure is 80 ft (24.4 m) long and 23 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCO RD SE 601
CrossesFk Blackwater Rvr
LocationS 1 T 45 N R 25 W
RouteCounty Highway 433
Coordinates38.71706, -93.63022
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.7 US tons
Inventory rating24.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length80 ft (24.4 m)
Longest span40 ft (12.2 m)
Deck width23 ft (7 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2023)
Projected traffic72 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$407,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD SE 601 over Fk Blackwater Rvr built?

It was built in 1992, making it 33 years old in 2025.

What condition is CO RD SE 601 over Fk Blackwater Rvr in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does CO RD SE 601 over Fk Blackwater Rvr carry?

About 45 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is CO RD SE 601 over Fk Blackwater Rvr?

The structure is 80 ft (24.4 m) long with a longest span of 40 ft (12.2 m) and a deck 23 ft wide.

Who owns CO RD SE 601 over Fk Blackwater Rvr?

It is owned by the County Highway Agency.