US Bridges

RTE 987D over Saw Mill River

Fair

Westchester County, New York · 4.1 MI NE of Tarrytown · Structure no. 000000005502080

Built
1972
53 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
40 ft
2 main spans
Daily traffic
10,639
2019 count
Owner
State
State Highway Agency

About this bridge

RTE 987D over Saw Mill River is a concrete continuous culvert carrying RTE 987D over Saw Mill River in Westchester County, New York. It was built in 1972, so it is 53 years old, younger 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 6 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 10,639 vehicles a day, roughly 2% of them trucks, projected to reach 15,008 by 2041. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesRTE 987D
CrossesSaw Mill River
Location4.1 MI NE of Tarrytown
Coordinates41.10806, -73.8014
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating98 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span19 ft (5.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,639 (2019)
Projected traffic15,008 by 2041
Trucks2%
Lanes on structure2
Traffic directionOne-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$518,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 987D over Saw Mill River built?

It was built in 1972, making it 53 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 June 2024.

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

About 10,639 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is RTE 987D over Saw Mill River?

The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.7 m).

Who owns RTE 987D over Saw Mill River?

It is owned by the State Highway Agency.