Structure 2000170 · Rensselaer County, NY

RTE 4 over Poesten Kill

Carries RTE 4 over Poesten Kill, 1.2 Mi.n.jct SH 378 & Us4.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT79 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 8/9Substructure 5/9 · sets the rating

79 ft end to end. Lengths and the car 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 multi-beam bridge.

Built1886rebuilt 1989
Length79.1 ft24.1 m
Daily traffic7,758counted 2016
Last inspectedJuly 2024every 24 months

Location

StateNew York
CountyRensselaer
Location1.2 Mi.n.jct SH 378 & Us4
CarriesRTE 4
CrossesPoesten Kill
Coordinates42.71987, -73.69152

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length79.1 ft (24.1 m)
Max Span73.8 ft (22.5 m)
Deck Width49.9 ft (15.2 m)
Deck Area366.3 sq m
Main Spans1
Year Built1886 (reconstructed 1989)

Traffic

Avg Daily Traffic7,758 (2016)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number000000002000170

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.

Nearby Bridges