I 495 NB Off Ramp over I 495 & Ramp B

Fair Condition26 years old3,834 vehicles/day

Location

StateMassachusetts
CountyMiddlesex
Location.6 Mi N Of Southboro Tl
CarriesI 495 NB Off Ramp
CrossesI 495 & Ramp B
Coordinates42.32233, -71.57195

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure7 (Good)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialSteel Continuous
DesignBox Beam - Single/Spread
Total Length722.1 ft (220.1 m)
Max Span153.9 ft (46.9 m)
Deck Width25.6 ft (7.8 m)
Deck Area1716.8 sq m
Main Spans5
Year Built2000

Traffic

Avg Daily Traffic3,834 (2022)
Truck Traffic7%
Lanes On Bridge1
Lanes Under Bridge7

Inspection & Ownership

Last Inspection623
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure NumberM06021AM0DOTNBI

Nearby Bridges

I 495 NB On Ramp over I 495 & Ramp D 0.1 mi Fair I 495 SB over HWY Northboro RD 0.5 mi Fair I 495 NB over HWY Northboro RD 0.5 mi Fair I 495 SB over Comb Mdc Aqueduct & Csx 0.6 mi Fair I 495 NB over Comb Mdc Aqueduct & Csx 0.6 mi Fair HWY Northboro RD over Rr Csx 0.7 mi Good HWY Forest ST over I 495 0.7 mi Fair HWY Johnson RD over Water Brook 1.0 mi Good I 495 SB over ST 30 Main ST 1.1 mi Fair I 495 NB over ST 30 Main ST 1.1 mi Fair