US Bridges

RTE 987D over Saw Mill River

Good

Westchester County, New York · .3 MI N JCT Smrp & I87 · Structure no. 000000005500739

Built
2019
6 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
152 ft
3 main spans
Daily traffic
29,010
2021 count
Owner
State
State Highway Agency

About this bridge

RTE 987D over Saw Mill River is a steel stringer/multi-beam or girder carrying RTE 987D over Saw Mill River in Westchester County, New York. It was built in 2019, so it is 6 years old, younger 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 29,010 vehicles a day, roughly 1% of them trucks, projected to reach 40,924 by 2041. The structure is 152 ft (46.3 m) long and 82 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRTE 987D
CrossesSaw Mill River
Location.3 MI N JCT Smrp & I87
Coordinates41.04613, -73.83196
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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 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 rating110.1 US tons
Inventory rating75.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length152 ft (46.3 m)
Longest span60 ft (18.3 m)
Deck width82 ft (25.1 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,010 (2021)
Projected traffic40,924 by 2041
Trucks1%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$8.4 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 987D over Saw Mill River built?

It was built in 2019, making it 6 years old in 2025.

What condition is RTE 987D over Saw Mill River 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 July 2023.

How much traffic does RTE 987D over Saw Mill River carry?

About 29,010 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is RTE 987D over Saw Mill River?

The structure is 152 ft (46.3 m) long with a longest span of 60 ft (18.3 m) and a deck 82 ft wide.

Who owns RTE 987D over Saw Mill River?

It is owned by the State Highway Agency.