US Bridges

CO RD NW 575 over Walnut CR

Poor

Johnson County, Missouri · S 27 T 47 N R 26 W · Structure no. 15741

Built
1900
125 years old, rebuilt 1983
Condition
Poor
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
45
2023 count
Owner
County
County Highway Agency

About this bridge

CO RD NW 575 over Walnut CR is a prestressed concrete tee beam carrying CO RD NW 575 over Walnut CR in Johnson County, Missouri. It was built in 1900 and reconstructed in 1983, so it is 125 years old, older 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 63 ft (19.2 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCO RD NW 575
CrossesWalnut CR
LocationS 27 T 47 N R 26 W
RouteCounty Highway 98
CountyJohnson County
StateMissouri
Coordinates38.84287, -93.76922
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.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 rating53.6 US tons
Inventory rating34.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length63 ft (19.2 m)
Longest span58 ft (17.7 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 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 closed5 mi (8 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$336,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD NW 575 over Walnut CR built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1983.

What condition is CO RD NW 575 over Walnut CR 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 November 2024.

How much traffic does CO RD NW 575 over Walnut CR carry?

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

How long is CO RD NW 575 over Walnut CR?

The structure is 63 ft (19.2 m) long with a longest span of 58 ft (17.7 m) and a deck 23 ft wide.

Who owns CO RD NW 575 over Walnut CR?

It is owned by the County Highway Agency.