Structure W210270U9DOTNBI · Hampden County, MA

US 20 Park Av Crcl over US 5 Riverdale ST

Carries US 20 Park Av Crcl over US 5 Riverdale ST, At North End Bridge.

Overall conditionFair

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

How ratings work
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT64 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 6/9Substructure 5/9 · sets the rating

64 ft end to end, longest span 31 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 rigid-frame bridge.

Built195274 years old
Length64.0 ft19.5 m
Daily traffic35,958counted 2017
Last inspectedAugust 2024every 24 months

Location

StateMassachusetts
CountyHampden
LocationAt North End Bridge
CarriesUS 20 Park Av Crcl
CrossesUS 5 Riverdale ST
Coordinates42.10772, -72.61603

Physical Characteristics

MaterialSteel
DesignFrame
Total Length64.0 ft (19.5 m)
Max Span31.5 ft (9.6 m)
Deck Width565.9 ft (172.5 m)
Deck Area3363.8 sq m
Main Spans2
Year Built1952

Traffic

Avg Daily Traffic35,958 (2017)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberW210270U9DOTNBI

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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