Salmon Street EB over Merrimack R Csx RD Ramp

Poor Condition56 years old13,150 vehicles/day

Location

StateNew Hampshire
CountyHillsborough
Location0.3mi W Of Jct RT 3
CarriesSalmon Street EB
CrossesMerrimack R Csx RD Ramp
Coordinates43.00358, -71.46972

Condition Ratings

Overall ConditionPoor
Deck4 (Poor)
Superstructure5 (Fair)
Substructure5 (Fair)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1023.0 ft (311.8 m)
Max Span169.0 ft (51.5 m)
Deck Width33.8 ft (10.3 m)
Deck Area3211.5 sq m
Main Spans4
Year Built1970 (reconstructed 1999)

Traffic

Avg Daily Traffic13,150 (2023)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge3

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 16 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Structure Number016101070007200

Nearby Bridges

Salmon Street WB over Merrimack River Csx RD 0.0 mi Fair Ramp E(camp St) over Csx 0.1 mi Fair South Ramp over I-293 Fee Tpk 0.3 mi Fair North Ramp over I-293 Fee Tpk 0.3 mi Fair I-293 Nh 3a Tpk N over Black Brook 0.6 mi Poor I-293 Nh 3a Tpk S over Black Brook 0.6 mi Poor Bridge Street WB over I-293 Nh 3a Csx Merr R 0.6 mi Fair Front Street over Black Brook 0.7 mi Good Bridge Street EB over I-293 Nh 3a Csx Merr R 0.7 mi Fair I-293 Fee Tpk over Stark Way 0.7 mi Poor