US Bridges

Industrial Park RD over Ammonoosuc River

Good

Grafton County, New Hampshire · 0.1 MI from US302 · Structure no. 015301900006100

Built
1995
30 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
322 ft
2 main spans
Daily traffic
2,234
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Industrial Park RD over Ammonoosuc River is a steel continuous stringer/multi-beam or girder carrying Industrial Park RD over Ammonoosuc River in Grafton County, New Hampshire. It was built in 1995, so it is 30 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 2,234 vehicles a day, projected to reach 3,306 by 2043. The structure is 322 ft (98.1 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesIndustrial Park RD
CrossesAmmonoosuc River
Location0.1 MI from US302
CountyGrafton County
StateNew Hampshire
Coordinates44.3081, -71.78861
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length322 ft (98.1 m)
Longest span165 ft (50.3 m)
Deck width39 ft (12 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,234 (2023)
Projected traffic3,306 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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)
NavigationNo navigation control on waterway

Frequently asked questions

When was Industrial Park RD over Ammonoosuc River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Industrial Park RD over Ammonoosuc River 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 Industrial Park RD over Ammonoosuc River carry?

About 2,234 vehicles per day (2023 count).

How long is Industrial Park RD over Ammonoosuc River?

The structure is 322 ft (98.1 m) long with a longest span of 165 ft (50.3 m) and a deck 39 ft wide.

Who owns Industrial Park RD over Ammonoosuc River?

It is owned by the City or Municipal Highway Agency.