US Bridges

County RD 611 over Long Br

PoorClosed to traffic

Monroe County, Missouri · S 25 T 53 N R 9 W · Structure no. 13069

Built
1910
115 years old
Condition
Poor
inspected May 2022
Type
Truss - Thru
Steel
Length
119 ft
1 main span
Daily traffic
15
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 611 over Long Br is a steel truss - thru carrying County RD 611 over Long Br in Monroe County, Missouri. It was built in 1910, so it is 115 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: closed to all traffic.

It carries about 15 vehicles a day, roughly 10% of them trucks, projected to reach 19 by 2043. The structure is 119 ft (36.3 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 611
CrossesLong Br
LocationS 25 T 53 N R 9 W
RouteCounty Highway 28
CountyMonroe County
StateMissouri
Coordinates39.34417, -91.87453
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2022
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
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
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadOther
Structure length119 ft (36.3 m)
Longest span80 ft (24.4 m)
Deck width12 ft (3.6 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2023)
Projected traffic19 by 2043
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$821,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 611 over Long Br built?

It was built in 1910, making it 115 years old in 2025.

What condition is County RD 611 over Long Br 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 2022.

How much traffic does County RD 611 over Long Br carry?

About 15 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 611 over Long Br?

The structure is 119 ft (36.3 m) long with a longest span of 80 ft (24.4 m) and a deck 12 ft wide.

Who owns County RD 611 over Long Br?

It is owned by the County Highway Agency.