US Bridges

Upper Shad Road over Mill River

Fair

Westchester County, New York · 8.7 MI E of Mount Kisco · Structure no. 000000003348400

Built
1930
95 years old, rebuilt 1993
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
908
2017 count
Owner
County
County Highway Agency

About this bridge

Upper Shad Road over Mill River is a prestressed concrete box beam or girders - multiple carrying Upper Shad Road over Mill River in Westchester County, New York. It was built in 1930 and reconstructed in 1993, so it is 95 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 6 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 908 vehicles a day, roughly 4% of them trucks, projected to reach 1,271 by 2037. The structure is 42 ft (12.8 m) long and 24 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesUpper Shad Road
CrossesMill River
Location8.7 MI E of Mount Kisco
Coordinates41.18872, -73.5626
Functional classUrban 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
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating88.4 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length42 ft (12.8 m)
Longest span35 ft (10.6 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic908 (2017)
Projected traffic1,271 by 2037
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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$1.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Upper Shad Road over Mill River built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1993.

What condition is Upper Shad Road over Mill River 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 September 2024.

How much traffic does Upper Shad Road over Mill River carry?

About 908 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Upper Shad Road over Mill River?

The structure is 42 ft (12.8 m) long with a longest span of 35 ft (10.6 m) and a deck 24 ft wide.

Who owns Upper Shad Road over Mill River?

It is owned by the County Highway Agency.