US Bridges

NW Manson RD over Shoal CR

PoorPosted for load

Caldwell County, Missouri · S 11 T 56 N R 29 W · Structure no. 22667

Built
1930
95 years old
Condition
Poor
inspected October 2023
Type
Truss - Thru
Steel
Length
131 ft
1 main span
Daily traffic
5
2024 count
Owner
County
County Highway Agency

About this bridge

NW Manson RD over Shoal CR is a steel truss - thru carrying NW Manson RD over Shoal CR in Caldwell County, Missouri. It was built in 1930, so it is 95 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 131 ft (39.9 m) long and 15 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNW Manson RD
CrossesShoal CR
LocationS 11 T 56 N R 29 W
RouteCounty Highway 368
CountyCaldwell County
StateMissouri
Coordinates39.68324, -94.11195
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionOctober 2023
Inspection intervalevery 24 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 adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating20.8 US tons
Inventory rating9.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadOther
Structure length131 ft (39.9 m)
Longest span100 ft (30.5 m)
Deck width15 ft (4.5 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$893,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NW Manson RD over Shoal CR built?

It was built in 1930, making it 95 years old in 2025.

What condition is NW Manson RD over Shoal 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 October 2023.

How much traffic does NW Manson RD over Shoal CR carry?

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

How long is NW Manson RD over Shoal CR?

The structure is 131 ft (39.9 m) long with a longest span of 100 ft (30.5 m) and a deck 15 ft wide.

Who owns NW Manson RD over Shoal CR?

It is owned by the County Highway Agency.