US Bridges

Mill Road over Saw Kill

PoorPosted for load

Dutchess County, New York · 1.0 MI N of Red Hook · Structure no. 000000003343720

Built
1940
85 years old
Condition
Poor
inspected November 2024
Type
Girder and Floorbeam System
Steel
Length
90 ft
1 main span
Daily traffic
915
2014 count
Owner
County
County Highway Agency

About this bridge

Mill Road over Saw Kill is a steel girder and floorbeam system carrying Mill Road over Saw Kill in Dutchess County, New York. It was built in 1940, so it is 85 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 915 vehicles a day, roughly 11% of them trucks, projected to reach 1,281 by 2034. The structure is 90 ft (27.4 m) long and 26 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesMill Road
CrossesSaw Kill
Location1.0 MI N of Red Hook
Coordinates42.01211, -73.87138
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating43 US tons
Inventory rating25 US tons

Structure

MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length90 ft (27.4 m)
Longest span86 ft (26.2 m)
Deck width26 ft (7.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic915 (2014)
Projected traffic1,281 by 2034
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill Road over Saw Kill built?

It was built in 1940, making it 85 years old in 2025.

What condition is Mill Road over Saw Kill 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 November 2024.

How much traffic does Mill Road over Saw Kill carry?

About 915 vehicles per day (2014 count), of which roughly 11% are trucks.

How long is Mill Road over Saw Kill?

The structure is 90 ft (27.4 m) long with a longest span of 86 ft (26.2 m) and a deck 26 ft wide.

Who owns Mill Road over Saw Kill?

It is owned by the County Highway Agency.