US Bridges

Elm Street over Saw Mill River

Poor

Westchester County, New York · 1.5 MI W of Dunwoodie · Structure no. 000000002254800

Built
1900
125 years old
Condition
Poor
inspected March 2024
Type
Arch - Deck
Masonry
Length
56 ft
1 main span
Daily traffic
4,465
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Elm Street over Saw Mill River is a masonry arch - deck carrying Elm Street over Saw Mill River in Westchester County, New York. It was built in 1900, so it is 125 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.

It carries about 4,465 vehicles a day, roughly 6% of them trucks, projected to reach 4,485 by 2041. The structure is 56 ft (17.1 m) long and 52 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesElm Street
CrossesSaw Mill River
Location1.5 MI W of Dunwoodie
Coordinates40.93446, -73.89419
Functional classUrban Other Principal Arterial

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
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating8.4 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans1
Design loadUnknown
Structure length56 ft (17.1 m)
Longest span38 ft (11.5 m)
Deck width52 ft (15.7 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,465 (2018)
Projected traffic4,485 by 2041
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$1.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Elm Street over Saw Mill River built?

It was built in 1900, making it 125 years old in 2025.

What condition is Elm Street over Saw Mill River 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 March 2024.

How much traffic does Elm Street over Saw Mill River carry?

About 4,465 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is Elm Street over Saw Mill River?

The structure is 56 ft (17.1 m) long with a longest span of 38 ft (11.5 m) and a deck 52 ft wide.

Who owns Elm Street over Saw Mill River?

It is owned by the City or Municipal Highway Agency.