US Bridges

Concord Road over Amey Brook

Good

Merrimack County, New Hampshire · 2.2 MI FR Hopkinton Tl · Structure no. 012001490011100

Built
1938
87 years old, rebuilt 1997
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
84 ft
3 main spans
Daily traffic
1,984
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Concord Road over Amey Brook is a steel continuous stringer/multi-beam or girder carrying Concord Road over Amey Brook in Merrimack County, New Hampshire. It was built in 1938 and reconstructed in 1997, so it is 87 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 1,984 vehicles a day, projected to reach 2,936 by 2043. The structure is 84 ft (25.6 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesConcord Road
CrossesAmey Brook
Location2.2 MI FR Hopkinton Tl
CountyMerrimack County
StateNew Hampshire
Coordinates43.18378, -71.79407
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.1 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length84 ft (25.6 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,984 (2023)
Projected traffic2,936 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
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 Concord Road over Amey Brook built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1997.

What condition is Concord Road over Amey Brook 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 July 2023.

How much traffic does Concord Road over Amey Brook carry?

About 1,984 vehicles per day (2023 count).

How long is Concord Road over Amey Brook?

The structure is 84 ft (25.6 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Concord Road over Amey Brook?

It is owned by the City or Municipal Highway Agency.