ST 1 A over HWY M Coughlin & Relie

Fair Condition75 years old102,900 vehicles/day

Location

StateMassachusetts
CountySuffolk
Location1.3 Km NE Of Callahan Tun
CarriesST 1 A
CrossesHWY M Coughlin & Relie
Coordinates42.37854, -71.02611

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure5 (Fair)
Scour CriticalNot applicable

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length169.0 ft (51.5 m)
Max Span85.0 ft (25.9 m)
Deck Width115.2 ft (35.1 m)
Deck Area1807.7 sq m
Main Spans2
Year Built1951 (reconstructed 1977)

Traffic

Avg Daily Traffic102,900 (2024)
Truck Traffic7%
Lanes On Bridge6

Inspection & Ownership

Last Inspection124
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure NumberB1623639UDOTNBI

Nearby Bridges

ST 1 A/off Ramp over HWY M Caughlin & Relie 0.1 mi Fair ST 1 A/on Ramp over Other Relief 0.1 mi Fair HWY Benningtn ST over HWY Martin Coughlin By 0.1 mi Fair ST 1 A over HWY Bningtn & Neptune 0.1 mi Fair HWY Saratoga ST over HWY Martin Coughlin By 0.2 mi Fair I 90 WB & Rp1asb over Other Relief 0.2 mi Good I 90 EB & Rp1anb over Comb ST 1a NB & Blue L 0.2 mi Good ST 1 A over HWY Saratga ST & U Trn 0.3 mi Fair I 90 WB over ST 1 A/nb & Rp1anb 0.3 mi Good ST 1 A/sb over Other Relief 0.3 mi Good