US Bridges

NH149 over Piscataquog River

Good

Hillsborough County, New Hampshire · 0.21 Mi. SW Weare Tl · Structure no. 006101500006200

Built
1939
86 years old, rebuilt 1995
Condition
Good
inspected June 2023
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
1,482
2023 count
Owner
State
State Highway Agency

About this bridge

NH149 over Piscataquog River is a concrete slab carrying NH149 over Piscataquog River in Hillsborough County, New Hampshire. It was built in 1939 and reconstructed in 1995, so it is 86 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 1,482 vehicles a day, roughly 10% of them trucks, projected to reach 2,193 by 2043. The structure is 26 ft (7.9 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNH149
CrossesPiscataquog River
Location0.21 Mi. SW Weare Tl
RouteState Highway 149
Coordinates43.06125, -71.79583
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating67 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length26 ft (7.9 m)
Longest span22 ft (6.7 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,482 (2023)
Projected traffic2,193 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 NH149 over Piscataquog River built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1995.

What condition is NH149 over Piscataquog 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 June 2023.

How much traffic does NH149 over Piscataquog River carry?

About 1,482 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NH149 over Piscataquog River?

The structure is 26 ft (7.9 m) long with a longest span of 22 ft (6.7 m) and a deck 31 ft wide.

Who owns NH149 over Piscataquog River?

It is owned by the State Highway Agency.