I-89 Nh 10 SB over US 4

Good Condition60 years old21,937 vehicles/day

Location

StateNew Hampshire
CountyGrafton
Location1.9 Mi From Enfield T.l.
CarriesI-89 Nh 10 SB
CrossesUS 4
Coordinates43.63544, -72.21224

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length184.1 ft (56.1 m)
Max Span77.1 ft (23.5 m)
Deck Width47.6 ft (14.5 m)
Deck Area813.5 sq m
Main Spans3
Year Built1966 (reconstructed 1987)

Traffic

Avg Daily Traffic21,937 (2023)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last Inspection623
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number014401600010600

Nearby Bridges

I-89 Nh 10 NB over US 4 0.0 mi Good I-89 Nh 10 NB over Riverside DR Mascoma Riv 0.1 mi Good I-89 SB over Mascoma R Riverside DR 0.1 mi Good Riverside Drive over Stony Brook 0.1 mi Good I-89 Nh 10 NB over Nhrr(abd) 0.2 mi Good I-89 Nh 10 SB over Nhrr(abd) 0.2 mi Good US 4 over Stony Brook 0.2 mi Fair I-89 Nh 10 SB over Hardy Hill Road 0.6 mi Good I-89 Nh 10 NB over Hardy Hill Road 0.6 mi Good Riverside Drive over Mascoma River 0.6 mi Fair