Structure CEPNEDMA2510001 · Barnstable County, MA

Ma Route 28 over Cape Cod Canal

Carries Ma Route 28 over Cape Cod Canal, Junct Ma Rtes 25 28 & 6.

Overall conditionPoor

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

How ratings work
Deck5/9 · Fair
Superstructuresets the rating4/9 · Poor
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,384 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9 · sets the ratingSubstructure 7/9

2,384 ft end to end, longest span 616 ft: about 6.6 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 through arch.

Built1935rebuilt 1981
Length2383.9 ft726.6 m
Daily traffic44,240counted 2019
Last inspectedOctober 2024every 24 months

Location

StateMassachusetts
CountyBarnstable
LocationJunct Ma Rtes 25 28 & 6
CarriesMa Route 28
CrossesCape Cod Canal
Coordinates41.77622, -70.54364

Physical Characteristics

MaterialSteel
DesignArch - Thru
Total Length2383.9 ft (726.6 m)
Max Span615.8 ft (187.7 m)
Deck Width48.6 ft (14.8 m)
Deck Area10753.7 sq m
Main Spans3
Year Built1935 (reconstructed 1981)

Traffic

Avg Daily Traffic44,240 (2019)
Truck Traffic20%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCorps of Engineers
Historical SignificanceHistorical significance is not determined
Scour Critical7 — Countermeasures installed
Structure NumberCEPNEDMA2510001

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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