I-89 Nh 10 NB over Riverside DR Mascoma Riv

Good Condition60 years old16,261 vehicles/day

Location

StateNew Hampshire
CountyGrafton
Location2.0 Mifrom Enfield T.l.
CarriesI-89 Nh 10 NB
CrossesRiverside DR Mascoma Riv
Coordinates43.63675, -72.21250

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length306.1 ft (93.3 m)
Max Span80.1 ft (24.4 m)
Deck Width66.9 ft (20.4 m)
Deck Area1903.3 sq m
Main Spans4
Year Built1966 (reconstructed 1987)

Traffic

Avg Daily Traffic16,261 (2023)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last Inspection523
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number014401600011200

Nearby Bridges

I-89 SB over Mascoma R Riverside DR 0.0 mi Good I-89 Nh 10 SB over US 4 0.1 mi Good I-89 Nh 10 NB over Nhrr(abd) 0.1 mi Good I-89 Nh 10 NB over US 4 0.1 mi Good I-89 Nh 10 SB over Nhrr(abd) 0.1 mi Good Riverside Drive over Stony Brook 0.2 mi Good US 4 over Stony Brook 0.3 mi Fair I-89 Nh 10 SB over Hardy Hill Road 0.5 mi Good I-89 Nh 10 NB over Hardy Hill Road 0.5 mi Good Riverside Drive over Mascoma River 0.5 mi Fair