Nh111 EB over Merrimack River

Fair Condition53 years old15,615 vehicles/day

Location

StateNew Hampshire
CountyHillsborough
Location.1 Mi West Of Jct RT 3-a
CarriesNh111 EB
CrossesMerrimack River
Coordinates42.76322, -71.44353

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure6 (Satisfactory)
Substructure6 (Satisfactory)
Channel/Waterway6 (Satisfactory)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length602.0 ft (183.5 m)
Max Span172.9 ft (52.7 m)
Deck Width36.4 ft (11.1 m)
Deck Area2036.8 sq m
Main Spans4
Year Built1973

Traffic

Avg Daily Traffic15,615 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last Inspection923
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Structure Number013101100006800

Nearby Bridges

Nh111 WB over Merrimack River 0.0 mi Fair Canal Street over Nashua River 0.6 mi Fair Allds Street over Salmon Brook 1.2 mi Fair Daniel Webster HWY over Nashua River 1.2 mi Fair Water Street over Factory Access Road 1.2 mi Fair Broad ST Parkway over Nashua River 1.5 mi Good Fairmount Street over Broad ST PKWY Csx 1.6 mi Good Baldwin Street over Broad ST PKWY Csx 1.7 mi Good Daniel Webster HWY over US 3 Fee Tpk NB Ramp 2.0 mi Good Fee Tpk NB Ramp 4 over Ramp 3b 2.1 mi Good