US Bridges

County RD 522 over Br of Maries Rvr

PoorPosted for load

Osage County, Missouri · S 5 T 41 N R 9 W · Structure no. 18294

Built
1950
75 years old
Condition
Poor
inspected April 2023
Type
Tee Beam
Concrete
Length
68 ft
2 main spans
Daily traffic
20
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 522 over Br of Maries Rvr is a concrete tee beam carrying County RD 522 over Br of Maries Rvr in Osage 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 28 by 2043. The structure is 68 ft (20.7 m) long and 20 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCounty RD 522
CrossesBr of Maries Rvr
LocationS 5 T 41 N R 9 W
RouteCounty Highway 181
CountyOsage County
StateMissouri
Coordinates38.33414, -91.94725
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
Deck4 PoorAdvanced section loss, deterioration, 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 inspectionApril 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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating21.8 US tons
Inventory rating9.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length68 ft (20.7 m)
Longest span36 ft (11 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic28 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-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$510,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 522 over Br of Maries Rvr built?

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

What condition is County RD 522 over Br of Maries 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 April 2023.

How much traffic does County RD 522 over Br of Maries Rvr carry?

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

How long is County RD 522 over Br of Maries Rvr?

The structure is 68 ft (20.7 m) long with a longest span of 36 ft (11 m) and a deck 20 ft wide.

Who owns County RD 522 over Br of Maries Rvr?

It is owned by the County Highway Agency.