US Bridges

County RD 611 over Maries Rvr

PoorClosed to traffic

Osage County, Missouri · S 26 T 43 N R 10 W · Structure no. 14760

Built
1893
132 years old
Condition
Poor
inspected April 2019
Type
Truss - Thru
Steel
Length
280 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 611 over Maries Rvr is a steel truss - thru carrying County RD 611 over Maries Rvr in Osage County, Missouri. It was built in 1893, so it is 132 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 0 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: closed to all traffic.

It carries about 50 vehicles a day, roughly 10% of them trucks, projected to reach 70 by 2043. The structure is 280 ft (85.3 m) long and 15 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty RD 611
CrossesMaries Rvr
LocationS 26 T 43 N R 10 W
RouteCounty Highway 75
CountyOsage County
StateMissouri
Coordinates38.44488, -91.99084
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.
Superstructure0 FailedOut of service and beyond corrective action.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2019
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour above top of footing
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1 (+4 approach)
Design loadOther
Structure length280 ft (85.3 m)
Longest span145 ft (44.2 m)
Deck width15 ft (4.5 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deck19 ft (5.6 m)

Traffic and service

Average daily traffic50 (2023)
Projected traffic70 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 611 over Maries Rvr built?

It was built in 1893, making it 132 years old in 2025.

What condition is County RD 611 over 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 2019.

How much traffic does County RD 611 over Maries Rvr carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 611 over Maries Rvr?

The structure is 280 ft (85.3 m) long with a longest span of 145 ft (44.2 m) and a deck 15 ft wide.

Who owns County RD 611 over Maries Rvr?

It is owned by the County Highway Agency.