Structure T09014AYDDOTNBI · Middlesex County, MA

St113 Kendall RD over US 3

Carries St113 Kendall RD over US 3, RT 113 At RT 3.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT297 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

297 ft end to end, longest span 145 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.

Built200422 years old
Length297.2 ft90.6 m
Daily traffic13,448counted 2019
Last inspectedMay 2023every 24 months

Location

StateMassachusetts
CountyMiddlesex
LocationRT 113 At RT 3
CarriesSt113 Kendall RD
CrossesUS 3
Coordinates42.68034, -71.44123

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length297.2 ft (90.6 m)
Max Span145.3 ft (44.3 m)
Deck Width73.8 ft (22.5 m)
Deck Area2038.5 sq m
Main Spans2
Year Built2004

Traffic

Avg Daily Traffic13,448 (2019)
Truck Traffic6%
Lanes On Bridge4
Lanes Under Bridge8

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberT09014AYDDOTNBI

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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