Structure L1303026VDOTNBI · Middlesex County, MA

St119 Great RD over I 495

Carries St119 Great RD over I 495, 1 Mi N Of St-2a.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT312 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

312 ft end to end, longest span 84 ft: about 4 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.

Built196066 years old
Length312.0 ft95.1 m
Daily traffic14,233counted 2023
Last inspectedOctober 2024every 24 months

Location

StateMassachusetts
CountyMiddlesex
Location1 Mi N Of St-2a
CarriesSt119 Great RD
CrossesI 495
Coordinates42.54935, -71.47822

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length312.0 ft (95.1 m)
Max Span84.0 ft (25.6 m)
Deck Width55.1 ft (16.8 m)
Deck Area1597.7 sq m
Main Spans5
Year Built1960

Traffic

Avg Daily Traffic14,233 (2023)
Truck Traffic2%
Lanes On Bridge3
Lanes Under Bridge6

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberL1303026VDOTNBI

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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