Structure 1490 · Washington County, RI

Shannock RD over Amtrak

Carries Shannock RD over Amtrak, 0.3 Mi N Of Jct Ri 2.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

105 ft end to end, longest span 35 ft. 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 slab bridge.

Built1931rebuilt 2000
Length105.0 ft32 m
Daily traffic1,314counted 2021
Last inspectedOctober 2023every 24 months

Location

StateRhode Island
CountyWashington
Location0.3 Mi N Of Jct Ri 2
CarriesShannock RD
CrossesAmtrak
Coordinates41.44599, -71.63416

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length105.0 ft (32 m)
Max Span35.1 ft (10.7 m)
Deck Width41.0 ft (12.5 m)
Deck Area400 sq m
Main Spans3
Year Built1931 (reconstructed 2000)

Traffic

Avg Daily Traffic1,314 (2021)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000001490

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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