I 495 NB over HWY Commonwealth DR

Fair Condition64 years old62,100 vehicles/day

Location

StateMassachusetts
CountyEssex
Location.4 Mi N Merrimac River
CarriesI 495 NB
CrossesHWY Commonwealth DR
Coordinates42.71383, -71.13706

Condition Ratings

Overall ConditionFair
Deck5 (Fair)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Scour CriticalNot applicable

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length103.0 ft (31.4 m)
Max Span46.9 ft (14.3 m)
Deck Width65.9 ft (20.1 m)
Deck Area631.1 sq m
Main Spans3
Year Built1962

Traffic

Avg Daily Traffic62,100 (2019)
Truck Traffic10%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last Inspection225
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Structure NumberL040402X9DOTNBI

Nearby Bridges

I 495 SB over HWY Commonwealth DR 0.0 mi Fair I 495 Ramp K over HWY Commonwealth DR 0.0 mi Fair I 495 SB over HWY Ramps A & B 0.2 mi Fair I 495 NB over HWY Ramps A & B 0.2 mi Fair I 495 Ramp E over I 495 Ramps A & B 0.2 mi Fair HWY Marstn ST NB over I 495 Ramps A & K 0.2 mi Good HWY Marstn ST NB over I 495 Ramp J 0.3 mi Good I 495 & Access Rps over Water Merrimack River 0.5 mi Poor I 495 Upper Level over I 495 Lower Level 0.5 mi Poor I 495 Rp M&merrk S over Water Shawsheen River 0.7 mi Fair