Structure D030342T8DOTNBI · Essex County, MA

US 1 Nb/newbry ST over I 95

Carries US 1 Nb/newbry ST over I 95, .5 Mi N Of St-62.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT334 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

334 ft end to end, longest span 165 ft: about 5 semi-trucks nose to tail. 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.

Built197254 years old
Length334.0 ft101.8 m
Daily traffic24,200counted 2019
Last inspectedMarch 2023every 24 months

Location

StateMassachusetts
CountyEssex
Location.5 Mi N Of St-62
CarriesUS 1 Nb/newbry ST
CrossesI 95
Coordinates42.59239, -70.96164

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length334.0 ft (101.8 m)
Max Span165.0 ft (50.3 m)
Deck Width42.0 ft (12.8 m)
Deck Area1303.0 sq m
Main Spans2
Year Built1972

Traffic

Avg Daily Traffic24,200 (2019)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberD030342T8DOTNBI

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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