US Bridges

NH115A over Priscilla Brook

Good

Coos County, New Hampshire · 1.8 MI S JCT US 2 · Structure no. 013500910010500

Built
1967
58 years old
Condition
Good
inspected March 2024
Type
Frame
Concrete
Length
27 ft
1 main span
Daily traffic
724
2023 count
Owner
State
State Highway Agency

About this bridge

NH115A over Priscilla Brook is a concrete frame carrying NH115A over Priscilla Brook in Coos 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 724 vehicles a day, roughly 10% of them trucks, projected to reach 1,071 by 2043. The structure is 27 ft (8.2 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesNH115A
CrossesPriscilla Brook
Location1.8 MI S JCT US 2
RouteState Highway 115A
Coordinates44.39245, -71.4773
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 inspectionMarch 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.7 US tons
Inventory rating40.5 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic724 (2023)
Projected traffic1,071 by 2043
Trucks10%
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 NH115A over Priscilla Brook built?

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

What condition is NH115A over Priscilla 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 March 2024.

How much traffic does NH115A over Priscilla Brook carry?

About 724 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NH115A over Priscilla Brook?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.

Who owns NH115A over Priscilla Brook?

It is owned by the State Highway Agency.