Structure 5521400 · Rockland County, NY

RTE 987e over Lake Sebago Dam

Carries RTE 987e over Lake Sebago Dam, 3.5 Mi NE Of Sloatsburg.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT194 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 4/9

194 ft end to end, longest span 12 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built1924rebuilt 1981
Length193.9 ft59.1 m
Daily traffic1,068counted 2014
Last inspectedJune 2024every 24 months

Location

StateNew York
CountyRockland
Location3.5 Mi NE Of Sloatsburg
CarriesRTE 987e
CrossesLake Sebago Dam
Coordinates41.19114, -74.13985

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length193.9 ft (59.1 m)
Max Span11.8 ft (3.6 m)
Deck Width36.1 ft (11 m)
Deck Area650.1 sq m
Main Spans19
Year Built1924 (reconstructed 1981)

Traffic

Avg Daily Traffic1,068 (2014)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Park/Forest Agency
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number000000005521400

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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