US Bridges

Prairie RD over Schlotz Br

PoorPosted for load

Holt County, Missouri · S 10 T 59 N R 38 W · Structure no. 21865

Built
1920
105 years old
Condition
Poor
inspected December 2024
Type
Truss - Thru
Steel
Length
41 ft
1 main span
Daily traffic
5
2024 count
Owner
County
County Highway Agency

About this bridge

Prairie RD over Schlotz Br is a steel truss - thru carrying Prairie RD over Schlotz Br in Holt County, Missouri. It was built in 1920, so it is 105 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. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, roughly 10% of them trucks, projected to reach 6 by 2044. The structure is 41 ft (12.5 m) long and 14 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesPrairie RD
CrossesSchlotz Br
LocationS 10 T 59 N R 38 W
RouteCounty Highway 328
Coordinates39.95268, -95.14159
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating10.9 US tons
Inventory rating6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width14 ft (4.2 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2024)
Projected traffic6 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$344,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Prairie RD over Schlotz Br built?

It was built in 1920, making it 105 years old in 2025.

What condition is Prairie RD over Schlotz Br 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 Prairie RD over Schlotz Br carry?

About 5 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Prairie RD over Schlotz Br?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 14 ft wide.

Who owns Prairie RD over Schlotz Br?

It is owned by the County Highway Agency.