Structure B240614KXDOTNBI · Hampden County, MA

I 90 WB over Comb Wash Rd&csx&riv

Carries I 90 WB over Comb Wash Rd&csx&riv, Mm 66.7 On I-90 WB.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT775 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

775 ft end to end, longest span 90 ft: about 2.2 football fields. 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 multi-beam bridge.

Built1957rebuilt 1984
Length774.9 ft236.2 m
Daily traffic24,191counted 2018
Last inspectedJuly 2023every 24 months

Location

StateMassachusetts
CountyHampden
LocationMm 66.7 On I-90 WB
CarriesI 90 WB
CrossesComb Wash Rd&csx&riv
Coordinates42.17167, -72.26129

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length774.9 ft (236.2 m)
Max Span89.9 ft (27.4 m)
Deck Width44.6 ft (13.6 m)
Deck Area3212.3 sq m
Main Spans7
Year Built1957 (reconstructed 1984)

Traffic

Avg Daily Traffic24,191 (2018)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberB240614KXDOTNBI

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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