US Bridges

RTE 987A over Tiorati Brook

Fair

Rockland County, New York · 4.1 MI N of Mount Ivy · Structure no. 000000005521490

Built
1967
58 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
60 ft
2 main spans
Daily traffic
98
2015 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

RTE 987A over Tiorati Brook is a concrete continuous culvert carrying RTE 987A over Tiorati Brook in Rockland County, New York. It was built in 1967, so it is 58 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 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 98 vehicles a day, roughly 4% of them trucks, projected to reach 119 by 2041. The structure is 60 ft (18.3 m) long and 49 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE 987A
CrossesTiorati Brook
Location4.1 MI N of Mount Ivy
CountyRockland County
StateNew York
Coordinates41.24926, -74.04207
Functional classUrban Minor Arterial

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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: 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 rating78 US tons
Inventory rating38 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span18 ft (5.4 m)
Deck width49 ft (14.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2015)
Projected traffic119 by 2041
Trucks4%
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

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2.7 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 987A over Tiorati Brook built?

It was built in 1967, making it 58 years old in 2025.

What condition is RTE 987A over Tiorati Brook 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 July 2023.

How much traffic does RTE 987A over Tiorati Brook carry?

About 98 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is RTE 987A over Tiorati Brook?

The structure is 60 ft (18.3 m) long with a longest span of 18 ft (5.4 m) and a deck 49 ft wide.

Who owns RTE 987A over Tiorati Brook?

It is owned by the State Park, Forest, or Reservation Agency.