US Bridges

RTE 987C over Lake Tiorati Brook

Fair

Rockland County, New York · .8 MI N JCT Pip & SH 210 · Structure no. 000000001068870

Built
1951
74 years old
Condition
Fair
inspected July 2024
Type
Arch - Deck
Concrete
Length
44 ft
1 main span
Daily traffic
31,679
2021 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

RTE 987C over Lake Tiorati Brook is a concrete arch - deck carrying RTE 987C over Lake Tiorati Brook in Rockland County, New York. It was built in 1951, so it is 74 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 31,679 vehicles a day, projected to reach 44,689 by 2041. The structure is 44 ft (13.4 m) long and 125 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRTE 987C
CrossesLake Tiorati Brook
Location.8 MI N JCT Pip & SH 210
CountyRockland County
StateNew York
Coordinates41.24573, -74.03041
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating18.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 20
Structure length44 ft (13.4 m)
Longest span30 ft (9.1 m)
Deck width125 ft (38.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,679 (2021)
Projected traffic44,689 by 2041
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$3.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 987C over Lake Tiorati Brook built?

It was built in 1951, making it 74 years old in 2025.

What condition is RTE 987C over Lake 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 2024.

How much traffic does RTE 987C over Lake Tiorati Brook carry?

About 31,679 vehicles per day (2021 count).

How long is RTE 987C over Lake Tiorati Brook?

The structure is 44 ft (13.4 m) long with a longest span of 30 ft (9.1 m) and a deck 125 ft wide.

Who owns RTE 987C over Lake Tiorati Brook?

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