US Bridges

RTE 987D over Saw Mill River

Fair

Westchester County, New York · 1.5 MI S JCT Rts Smrp+tsp · Structure no. 000000005500789

Built
1933
92 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
42,645
2020 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 1933, so it is 92 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 42,645 vehicles a day, roughly 1% of them trucks, projected to reach 60,159 by 2041. The structure is 36 ft (11 m) long and 69 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesRTE 987D
CrossesSaw Mill River
Location1.5 MI S JCT Rts Smrp+tsp
CountyWestchester County
StateNew York
Coordinates41.095, -73.81556
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionApril 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length36 ft (11 m)
Longest span31 ft (9.4 m)
Deck width69 ft (21.1 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,645 (2020)
Projected traffic60,159 by 2041
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$3.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 987D over Saw Mill River built?

It was built in 1933, making it 92 years old in 2025.

What condition is RTE 987D 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 April 2024.

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

About 42,645 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is RTE 987D over Saw Mill River?

The structure is 36 ft (11 m) long with a longest span of 31 ft (9.4 m) and a deck 69 ft wide.

Who owns RTE 987D over Saw Mill River?

It is owned by the State Highway Agency.