US Bridges

Ridge Road over Mill River

PoorPosted for load

Dutchess County, New York · 3.1 MI SW of Dover Plains · Structure no. 000000002342940

Built
1900
125 years old, rebuilt 1993
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
27 ft
1 main span
Daily traffic
114
2019 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Ridge Road over Mill River is a wood or timber stringer/multi-beam or girder carrying Ridge Road over Mill River in Dutchess County, New York. It was built in 1900 and reconstructed in 1993, so it is 125 years old, older than the New York average of 53 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 114 vehicles a day, roughly 7% of them trucks, projected to reach 160 by 2039. The structure is 27 ft (8.2 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesRidge Road
CrossesMill River
Location3.1 MI SW of Dover Plains
Coordinates41.69778, -73.61084
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating49.1 US tons
Inventory rating35.1 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width18 ft (5.6 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic114 (2019)
Projected traffic160 by 2039
Trucks7%
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

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$463,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ridge Road over Mill River built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1993.

What condition is Ridge Road over Mill River 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 2024.

How much traffic does Ridge Road over Mill River carry?

About 114 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is Ridge Road over Mill River?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 18 ft wide.

Who owns Ridge Road over Mill River?

It is owned by the Town or Township Highway Agency.