US Bridges

Grist Mill Road over Wappinger Creek

Fair

Dutchess County, New York · 0.5 MI SW of Stanfordvile · Structure no. 000000003343860

Built
1931
94 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
3 main spans
Daily traffic
351
2019 count
Owner
County
County Highway Agency

About this bridge

Grist Mill Road over Wappinger Creek is a steel stringer/multi-beam or girder carrying Grist Mill Road over Wappinger Creek in Dutchess County, New York. It was built in 1931, so it is 94 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 351 vehicles a day, roughly 10% of them trucks, projected to reach 491 by 2039. The structure is 73 ft (22.3 m) long and 27 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesGrist Mill Road
CrossesWappinger Creek
Location0.5 MI SW of Stanfordvile
CountyDutchess County
StateNew York
Coordinates41.86165, -73.71945
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating66 US tons
Inventory rating50.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length73 ft (22.3 m)
Longest span23 ft (7 m)
Deck width27 ft (8.1 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic351 (2019)
Projected traffic491 by 2039
Trucks10%
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 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Grist Mill Road over Wappinger Creek built?

It was built in 1931, making it 94 years old in 2025.

What condition is Grist Mill Road over Wappinger Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does Grist Mill Road over Wappinger Creek carry?

About 351 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Grist Mill Road over Wappinger Creek?

The structure is 73 ft (22.3 m) long with a longest span of 23 ft (7 m) and a deck 27 ft wide.

Who owns Grist Mill Road over Wappinger Creek?

It is owned by the County Highway Agency.