US Bridges

Winter Street over Roaring Brook

Fair

Coos County, New Hampshire · 0.3 MI E Nh RTE 110 · Structure no. 019801070012200

Built
1956
69 years old, rebuilt 2017
Condition
Fair
inspected June 2024
Type
Frame
Concrete
Length
31 ft
1 main span
Daily traffic
585
2023 count
Owner
State
State Highway Agency

About this bridge

Winter Street over Roaring Brook is a concrete frame carrying Winter Street over Roaring Brook in Coos County, New Hampshire. It was built in 1956 and reconstructed in 2017, so it is 69 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 6 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 585 vehicles a day, roughly 10% of them trucks, projected to reach 865 by 2043. The structure is 31 ft (9.4 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWinter Street
CrossesRoaring Brook
Location0.3 MI E Nh RTE 110
RouteState Highway 0
CountyCoos County
StateNew Hampshire
Coordinates44.59501, -71.50282
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating92 US tons
Inventory rating55.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length31 ft (9.4 m)
Longest span27 ft (8.2 m)
Deck width25 ft (7.5 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic585 (2023)
Projected traffic865 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 Winter Street over Roaring Brook built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2017.

What condition is Winter Street over Roaring Brook 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 June 2024.

How much traffic does Winter Street over Roaring Brook carry?

About 585 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Winter Street over Roaring Brook?

The structure is 31 ft (9.4 m) long with a longest span of 27 ft (8.2 m) and a deck 25 ft wide.

Who owns Winter Street over Roaring Brook?

It is owned by the State Highway Agency.