US Bridges

Pillsbury Street over Mascoma River

Good

Grafton County, New Hampshire · 0.2 MI FR School ST · Structure no. 007700880015800

Built
1930
95 years old, rebuilt 1996
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
142 ft
3 main spans
Daily traffic
663
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pillsbury Street over Mascoma River is a steel stringer/multi-beam or girder carrying Pillsbury Street over Mascoma River in Grafton County, New Hampshire. It was built in 1930 and reconstructed in 1996, so it is 95 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 663 vehicles a day, roughly 4% of them trucks, projected to reach 981 by 2043. The structure is 142 ft (43.3 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesPillsbury Street
CrossesMascoma River
Location0.2 MI FR School ST
Coordinates43.64212, -72.13998
Functional classUrban 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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating83 US tons
Inventory rating50 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length142 ft (43.3 m)
Longest span46 ft (14 m)
Deck width26 ft (7.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic663 (2023)
Projected traffic981 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Pillsbury Street over Mascoma River built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1996.

What condition is Pillsbury Street over Mascoma 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 September 2024.

How much traffic does Pillsbury Street over Mascoma River carry?

About 663 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Pillsbury Street over Mascoma River?

The structure is 142 ft (43.3 m) long with a longest span of 46 ft (14 m) and a deck 26 ft wide.

Who owns Pillsbury Street over Mascoma River?

It is owned by the City or Municipal Highway Agency.