US Bridges

I-93 NB over Eustis Hill Road

Good

Grafton County, New Hampshire · 0.6 MI Bethlehem Tl · Structure no. 015302080004200

Built
1959
66 years old, rebuilt 1991
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
4,235
2023 count
Owner
State
State Highway Agency

About this bridge

I-93 NB over Eustis Hill Road is a steel stringer/multi-beam or girder carrying I-93 NB over Eustis Hill Road in Grafton County, New Hampshire. It was built in 1959 and reconstructed in 1991, 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 4,235 vehicles a day, roughly 9% of them trucks, projected to reach 6,267 by 2043. The structure is 45 ft (13.7 m) long and 50 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesI-93 NB
CrossesEustis Hill Road
Location0.6 MI Bethlehem Tl
RouteInterstate 93
CountyGrafton County
StateNew Hampshire
Coordinates44.29771, -71.77196
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating67 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length45 ft (13.7 m)
Longest span39 ft (11.9 m)
Deck width50 ft (15.3 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,235 (2023)
Projected traffic6,267 by 2043
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 Eustis Hill Road built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1991.

What condition is I-93 NB over Eustis Hill Road 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 I-93 NB over Eustis Hill Road carry?

About 4,235 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is I-93 NB over Eustis Hill Road?

The structure is 45 ft (13.7 m) long with a longest span of 39 ft (11.9 m) and a deck 50 ft wide.

Who owns I-93 NB over Eustis Hill Road?

It is owned by the State Highway Agency.