US Bridges

Shindagen Road over Brook

Good

Merrimack County, New Hampshire · .05 MI from Village Road · Structure no. 027501940010600

Built
1940
85 years old, rebuilt 2015
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
46 ft
1 main span
Daily traffic
146
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Shindagen Road over Brook is a concrete box beam or girders - multiple carrying Shindagen Road over Brook in Merrimack County, New Hampshire. It was built in 1940 and reconstructed in 2015, so it is 85 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 146 vehicles a day, roughly 4% of them trucks, projected to reach 216 by 2043. The structure is 46 ft (14 m) long and 19 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesShindagen Road
CrossesBrook
Location.05 MI from Village Road
Coordinates43.41646, -71.90798
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length46 ft (14 m)
Longest span42 ft (12.8 m)
Deck width19 ft (5.8 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic146 (2023)
Projected traffic216 by 2043
Trucks4%
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 Shindagen Road over Brook built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 2015.

What condition is Shindagen 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 2024.

How much traffic does Shindagen Road over Brook carry?

About 146 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Shindagen Road over Brook?

The structure is 46 ft (14 m) long with a longest span of 42 ft (12.8 m) and a deck 19 ft wide.

Who owns Shindagen Road over Brook?

It is owned by the City or Municipal Highway Agency.