US Bridges

NH136 over S Br Piscataquog River

Good

Hillsborough County, New Hampshire · 2.6 MI from New Boston Tl · Structure no. 008601110010000

Built
1967
58 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete
Length
26 ft
1 main span
Daily traffic
1,523
2023 count
Owner
State
State Highway Agency

About this bridge

NH136 over S Br Piscataquog River is a concrete slab carrying NH136 over S Br Piscataquog River in Hillsborough County, New Hampshire. It was built in 1967, so it is 58 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 1,523 vehicles a day, roughly 4% of them trucks, projected to reach 2,254 by 2043. The structure is 26 ft (7.9 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNH136
CrossesS Br Piscataquog River
Location2.6 MI from New Boston Tl
RouteState Highway 136
Coordinates42.98527, -71.80372
Functional classRural Major 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 protection8 Very GoodNo problems noted.
Last inspectionMay 2024
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 alignment6: Equal to present minimum criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span22 ft (6.7 m)
Deck width33 ft (10.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,523 (2023)
Projected traffic2,254 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 NH136 over S Br Piscataquog River built?

It was built in 1967, making it 58 years old in 2025.

What condition is NH136 over S Br 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 May 2024.

How much traffic does NH136 over S Br Piscataquog River carry?

About 1,523 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NH136 over S Br Piscataquog River?

The structure is 26 ft (7.9 m) long with a longest span of 22 ft (6.7 m) and a deck 33 ft wide.

Who owns NH136 over S Br Piscataquog River?

It is owned by the State Highway Agency.