US Bridges

East Street over Norwalk Reservoir

Good

Westchester County, New York · 12.0 Mi.E.Of Mt.Kisco · Structure no. 000000003348520

Built
1909
116 years old, rebuilt 2002
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
192
2019 count
Owner
County
County Highway Agency

About this bridge

East Street over Norwalk Reservoir is a prestressed concrete box beam or girders - multiple carrying East Street over Norwalk Reservoir in Westchester County, New York. It was built in 1909 and reconstructed in 2002, so it is 116 years old, older 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 192 vehicles a day, roughly 5% of them trucks, projected to reach 269 by 2039. The structure is 39 ft (11.9 m) long and 21 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesEast Street
CrossesNorwalk Reservoir
Location12.0 Mi.E.Of Mt.Kisco
Coordinates41.22201, -73.49582
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length39 ft (11.9 m)
Longest span37 ft (11.2 m)
Deck width21 ft (6.3 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic192 (2019)
Projected traffic269 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-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$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was East Street over Norwalk Reservoir built?

It was built in 1909, making it 116 years old in 2025. It was reconstructed in 2002.

What condition is East Street over Norwalk Reservoir 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 May 2023.

How much traffic does East Street over Norwalk Reservoir carry?

About 192 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is East Street over Norwalk Reservoir?

The structure is 39 ft (11.9 m) long with a longest span of 37 ft (11.2 m) and a deck 21 ft wide.

Who owns East Street over Norwalk Reservoir?

It is owned by the County Highway Agency.