US Bridges

Shaker Road over Brook

Good

Merrimack County, New Hampshire · Adjacent to JCT NH140 · Structure no. 019601300015400

Built
2019
6 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete
Length
34 ft
1 main span
Daily traffic
1,167
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Shaker Road over Brook is a concrete slab carrying Shaker Road over Brook in Merrimack County, New Hampshire. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,167 vehicles a day, projected to reach 1,727 by 2043. The structure is 34 ft (10.4 m) long and 26 ft wide.

Location

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CarriesShaker Road
CrossesBrook
LocationAdjacent to JCT NH140
CountyMerrimack County
StateNew Hampshire
Coordinates43.4504, -71.5606
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.6 US tons
Inventory rating59.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span28 ft (8.5 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,167 (2023)
Projected traffic1,727 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Shaker Road over Brook built?

It was built in 2019, making it 6 years old in 2025.

What condition is Shaker Road over 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 August 2023.

How much traffic does Shaker Road over Brook carry?

About 1,167 vehicles per day (2023 count).

How long is Shaker Road over Brook?

The structure is 34 ft (10.4 m) long with a longest span of 28 ft (8.5 m) and a deck 26 ft wide.

Who owns Shaker Road over Brook?

It is owned by the City or Municipal Highway Agency.