US Bridges

County Road 351 over Br of Grand Rvr

PoorPosted for load

Carroll County, Missouri · S 18 T 54 N R 21 W · Structure no. 21036

Built
1950
75 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

County Road 351 over Br of Grand Rvr is a steel stringer/multi-beam or girder carrying County Road 351 over Br of Grand Rvr in Carroll County, Missouri. It was built in 1950, so it is 75 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 32 ft (9.8 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCounty Road 351
CrossesBr of Grand Rvr
LocationS 18 T 54 N R 21 W
RouteCounty Highway 286
CountyCarroll County
StateMissouri
Coordinates39.48649, -93.29768
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 inspectionFebruary 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.8 US tons
Inventory rating9.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$311,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 351 over Br of Grand Rvr built?

It was built in 1950, making it 75 years old in 2025.

What condition is County Road 351 over Br of Grand 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 February 2024.

How much traffic does County Road 351 over Br of Grand Rvr carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County Road 351 over Br of Grand Rvr?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 16 ft wide.

Who owns County Road 351 over Br of Grand Rvr?

It is owned by the County Highway Agency.