US Bridges

West Farm Road over I-93

Good

Grafton County, New Hampshire · 1.7 MI Sugarhill Tl · Structure no. 002401190006500

Built
1959
66 years old, rebuilt 1990
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
244 ft
5 main spans
Daily traffic
121
2023 count
Owner
State
State Highway Agency

About this bridge

West Farm Road over I-93 is a steel continuous stringer/multi-beam or girder carrying West Farm Road over I-93 in Grafton County, New Hampshire. It was built in 1959 and reconstructed in 1990, so it is 66 years old, older 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 121 vehicles a day, roughly 4% of them trucks, projected to reach 179 by 2043. The structure is 244 ft (74.4 m) long and 31 ft wide.

Location

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CarriesWest Farm Road
CrossesI-93
Location1.7 MI Sugarhill Tl
CountyGrafton County
StateNew Hampshire
Coordinates44.27882, -71.74304
Functional classRural Local

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length244 ft (74.4 m)
Longest span66 ft (20.1 m)
Deck width31 ft (9.3 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic121 (2023)
Projected traffic179 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 West Farm Road over I-93 built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1990.

What condition is West Farm Road over I-93 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 May 2023.

How much traffic does West Farm Road over I-93 carry?

About 121 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is West Farm Road over I-93?

The structure is 244 ft (74.4 m) long with a longest span of 66 ft (20.1 m) and a deck 31 ft wide.

Who owns West Farm Road over I-93?

It is owned by the State Highway Agency.