US Bridges

Ann Street over Saw Mill River

Fair

Westchester County, New York · 1.6 MI W of Dunwoodie · Structure no. 000000002254770

Built
1950
75 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
2,003
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ann Street over Saw Mill River is a steel stringer/multi-beam or girder carrying Ann Street over Saw Mill River in Westchester County, New York. It was built in 1950, so it is 75 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 2,003 vehicles a day, roughly 5% of them trucks, projected to reach 2,804 by 2040. The structure is 32 ft (9.8 m) long and 51 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesAnn Street
CrossesSaw Mill River
Location1.6 MI W of Dunwoodie
RouteCity Street 0
Coordinates40.93297, -73.89638
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.9 US tons
Inventory rating27.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width51 ft (15.4 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,003 (2020)
Projected traffic2,804 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ann Street over Saw Mill River built?

It was built in 1950, making it 75 years old in 2025.

What condition is Ann Street over Saw 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 June 2023.

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

About 2,003 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Ann Street over Saw Mill River?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 51 ft wide.

Who owns Ann Street over Saw Mill River?

It is owned by the City or Municipal Highway Agency.