US Bridges

County RD 186 over Br of 102 Rvr

PoorPosted for load

Andrew County, Missouri · S 19 T 60 N R 34 W · Structure no. 18447

Built
1970
55 years old, rebuilt 1980
Condition
Poor
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
5
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 186 over Br of 102 Rvr is a steel stringer/multi-beam or girder carrying County RD 186 over Br of 102 Rvr in Andrew County, Missouri. It was built in 1970 and reconstructed in 1980, so it is 55 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 3 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 30 ft (9.1 m) long and 12 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCounty RD 186
CrossesBr of 102 Rvr
LocationS 19 T 60 N R 34 W
RouteCounty Highway 186
CountyAndrew County
StateMissouri
Coordinates39.99775, -94.76272
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating4 US tons
Inventory rating3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length30 ft (9.1 m)
Longest span30 ft (9 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 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 closed6.2 mi (10 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$289,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 186 over Br of 102 Rvr built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1980.

What condition is County RD 186 over Br of 102 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 December 2023.

How much traffic does County RD 186 over Br of 102 Rvr carry?

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

How long is County RD 186 over Br of 102 Rvr?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9 m) and a deck 12 ft wide.

Who owns County RD 186 over Br of 102 Rvr?

It is owned by the County Highway Agency.