Nh 12a over Mascoma River

Fair Condition49 years old12,844 vehicles/day

Location

StateNew Hampshire
CountyGrafton
Location2.7 Mi. N. Plainfield Tl
CarriesNh 12a
CrossesMascoma River
Coordinates43.63399, -72.31738

Condition Ratings

Overall ConditionFair
Deck5 (Fair)
Superstructure6 (Satisfactory)
Substructure7 (Good)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length113.8 ft (34.7 m)
Max Span109.9 ft (33.5 m)
Deck Width64.6 ft (19.7 m)
Deck Area683.6 sq m
Main Spans1
Year Built1977

Traffic

Avg Daily Traffic12,844 (2023)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last Inspection724
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Structure Number014400550010300

Nearby Bridges

I-89 NB over Nh 12a 0.2 mi Good I-89 SB over Nh 12a 0.2 mi Good I-89 NB over Plaza Connector Road 0.3 mi Fair I-89 SB over Plaza Connector Road 0.3 mi Good I-89 SB Off Ramp over Plaza Connector Road 0.3 mi Good I-89 NB over Connecticut River Necrr 0.6 mi Poor I-89 NB over Connecticut River Necrr 0.6 mi Poor I-89 SB over Connecticut River Necrr 0.6 mi Poor I-89 SB over Connecticut River Necrr 0.6 mi Poor I 00089 Ml over I 89 Over TH No 78 0.7 mi Good