US Bridges

County RD 141 over Mid Fk of Salt Rvr

PoorPosted for load

Monroe County, Missouri · S 29 T 55 N R 11 W · Structure no. 22412

Built
1920
105 years old
Condition
Poor
inspected May 2024
Type
Truss - Thru
Steel
Length
141 ft
1 main span
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 141 over Mid Fk of Salt Rvr is a steel truss - thru carrying County RD 141 over Mid Fk of Salt Rvr in Monroe 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 25 by 2043. The structure is 141 ft (43 m) long and 12 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCounty RD 141
CrossesMid Fk of Salt Rvr
LocationS 29 T 55 N R 11 W
RouteCounty Highway 354
CountyMonroe County
StateMissouri
Coordinates39.52208, -92.17086
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating15.9 US tons
Inventory rating10.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadOther
Structure length141 ft (43 m)
Longest span91 ft (27.7 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic25 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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$965,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 141 over Mid Fk of Salt Rvr built?

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

What condition is County RD 141 over Mid Fk of Salt 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 May 2024.

How much traffic does County RD 141 over Mid Fk of Salt Rvr carry?

About 20 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 141 over Mid Fk of Salt Rvr?

The structure is 141 ft (43 m) long with a longest span of 91 ft (27.7 m) and a deck 12 ft wide.

Who owns County RD 141 over Mid Fk of Salt Rvr?

It is owned by the County Highway Agency.