US Bridges

NH111A over Beaver Brook

Good

Hillsborough County, New Hampshire · .43 MI N Pelham Village · Structure no. 020501050009900

Built
1966
59 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
54 ft
1 main span
Daily traffic
6,245
2023 count
Owner
State
State Highway Agency

About this bridge

NH111A over Beaver Brook is a steel stringer/multi-beam or girder carrying NH111A over Beaver Brook in Hillsborough County, New Hampshire. It was built in 1966, so it is 59 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 6,245 vehicles a day, roughly 10% of them trucks, projected to reach 9,242 by 2043. The structure is 54 ft (16.5 m) long and 40 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNH111A
CrossesBeaver Brook
Location.43 MI N Pelham Village
RouteState Highway 111A
Coordinates42.74019, -71.32258
Functional classUrban Collector

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.1 US tons
Inventory rating31.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length54 ft (16.5 m)
Longest span48 ft (14.6 m)
Deck width40 ft (12.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,245 (2023)
Projected traffic9,242 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 NH111A over Beaver Brook built?

It was built in 1966, making it 59 years old in 2025.

What condition is NH111A over Beaver 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 June 2024.

How much traffic does NH111A over Beaver Brook carry?

About 6,245 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NH111A over Beaver Brook?

The structure is 54 ft (16.5 m) long with a longest span of 48 ft (14.6 m) and a deck 40 ft wide.

Who owns NH111A over Beaver Brook?

It is owned by the State Highway Agency.