US Bridges

Ridge Road over Mill River

Good

Dutchess County, New York · 3.2 MI SW of Dover Plns · Structure no. 000000003342970

Built
2024
1 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
551
2019 count
Owner
County
County Highway Agency

About this bridge

Ridge Road over Mill River is a prestressed concrete box beam or girders - multiple carrying Ridge Road over Mill River in Dutchess County, New York. It was built in 2024, so it is 1 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 551 vehicles a day, roughly 4% of them trucks, projected to reach 771 by 2039. The structure is 64 ft (19.6 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRidge Road
CrossesMill River
Location3.2 MI SW of Dover Plns
Coordinates41.69535, -73.60796
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating105.1 US tons
Inventory rating63.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length64 ft (19.6 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic551 (2019)
Projected traffic771 by 2039
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ridge Road over Mill River built?

It was built in 2024, making it 1 years old in 2025.

What condition is Ridge Road over Mill River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Ridge Road over Mill River carry?

About 551 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Ridge Road over Mill River?

The structure is 64 ft (19.6 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns Ridge Road over Mill River?

It is owned by the County Highway Agency.