US Bridges

Grant Road over Piscassic River

Fair

Rockingham County, New Hampshire · .61 Mi. SW Jct. 152 · Structure no. 019000980007900

Built
1947
78 years old
Condition
Fair
inspected July 2024
Type
Frame
Concrete
Length
29 ft
1 main span
Daily traffic
2,386
2023 count
Owner
State
State Highway Agency

About this bridge

Grant Road over Piscassic River is a concrete frame carrying Grant Road over Piscassic River in Rockingham County, New Hampshire. It was built in 1947, so it is 78 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,386 vehicles a day, roughly 4% of them trucks, projected to reach 3,531 by 2043. The structure is 29 ft (8.8 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesGrant Road
CrossesPiscassic River
Location.61 Mi. SW Jct. 152
RouteState Highway 0
CountyRockingham County
StateNew Hampshire
Coordinates43.06908, -70.96196
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length29 ft (8.8 m)
Longest span26 ft (7.9 m)
Deck width28 ft (8.4 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,386 (2023)
Projected traffic3,531 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

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 Grant Road over Piscassic River built?

It was built in 1947, making it 78 years old in 2025.

What condition is Grant Road over Piscassic River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Grant Road over Piscassic River carry?

About 2,386 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Grant Road over Piscassic River?

The structure is 29 ft (8.8 m) long with a longest span of 26 ft (7.9 m) and a deck 28 ft wide.

Who owns Grant Road over Piscassic River?

It is owned by the State Highway Agency.