I-89 SB over Nh 12a

Good Condition14 years old18,618 vehicles/day

Location

StateNew Hampshire
CountyGrafton
Location0.5 Mi From Vt S.l.
CarriesI-89 SB
CrossesNh 12a
Coordinates43.63148, -72.32011

Condition Ratings

Overall ConditionGood
Deck8 (Very Good)
Superstructure8 (Very Good)
Substructure8 (Very Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length158.1 ft (48.2 m)
Max Span151.2 ft (46.1 m)
Deck Width58.1 ft (17.7 m)
Deck Area853.1 sq m
Main Spans1
Year Built2012

Traffic

Avg Daily Traffic18,618 (2023)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge7

Inspection & Ownership

Last Inspection623
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number014400520009900

Nearby Bridges

I-89 NB over Nh 12a 0.0 mi Good I-89 NB over Plaza Connector Road 0.1 mi Fair I-89 SB over Plaza Connector Road 0.1 mi Good I-89 SB Off Ramp over Plaza Connector Road 0.2 mi Good Nh 12a over Mascoma River 0.2 mi Fair I-89 SB over Connecticut River Necrr 0.5 mi Poor I-89 NB over Connecticut River Necrr 0.5 mi Poor I-89 SB over Connecticut River Necrr 0.5 mi Poor I-89 NB over Connecticut River Necrr 0.5 mi Poor I 00089 Ml over I 89 Over TH No 78 0.6 mi Good