US Bridges

I-93 NB over NH112 Nhrr

Good

Grafton County, New Hampshire · 0.29 MI Lincoln Tl · Structure no. 028401750016300

Built
1972
53 years old, rebuilt 2010
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
150 ft
1 main span
Daily traffic
7,160
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 NB over NH112 Nhrr is a steel stringer/multi-beam or girder carrying I-93 NB over NH112 Nhrr in Grafton County, New Hampshire. It was built in 1972 and reconstructed in 2010, so it is 53 years old, younger than the New Hampshire average of 56.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,160 vehicles a day, roughly 10% of them trucks, projected to reach 10,596 by 2043. The structure is 150 ft (45.7 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-93 NB
CrossesNH112 Nhrr
Location0.29 MI Lincoln Tl
RouteInterstate 93
CountyGrafton County
StateNew Hampshire
Coordinates44.03401, -71.67929
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.7 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length150 ft (45.7 m)
Longest span144 ft (43.9 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,160 (2023)
Projected traffic10,596 by 2043
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$314,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-93 NB over NH112 Nhrr built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2010.

What condition is I-93 NB over NH112 Nhrr in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does I-93 NB over NH112 Nhrr carry?

About 7,160 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is I-93 NB over NH112 Nhrr?

The structure is 150 ft (45.7 m) long with a longest span of 144 ft (43.9 m) and a deck 45 ft wide.

Who owns I-93 NB over NH112 Nhrr?

It is owned by the State Highway Agency.