US Bridges

East Side River RD over Chickwolnepy Stream

Good

Coos County, New Hampshire · 1.7 MI S Dummer Tl · Structure no. 017001970011900

Built
1950
75 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
264
2023 count
Owner
State
State Highway Agency

About this bridge

East Side River RD over Chickwolnepy Stream is a concrete continuous slab carrying East Side River RD over Chickwolnepy Stream in Coos County, New Hampshire. It was built in 1950, so it is 75 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 264 vehicles a day, roughly 10% of them trucks, projected to reach 390 by 2043. The structure is 82 ft (25 m) long and 25 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesEast Side River RD
CrossesChickwolnepy Stream
Location1.7 MI S Dummer Tl
RouteState Highway 0
Coordinates44.58941, -71.1864
Functional classRural Local

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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating40.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length82 ft (25 m)
Longest span32 ft (9.8 m)
Deck width25 ft (7.6 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic264 (2023)
Projected traffic390 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 East Side River RD over Chickwolnepy Stream built?

It was built in 1950, making it 75 years old in 2025.

What condition is East Side River RD over Chickwolnepy Stream 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 East Side River RD over Chickwolnepy Stream carry?

About 264 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is East Side River RD over Chickwolnepy Stream?

The structure is 82 ft (25 m) long with a longest span of 32 ft (9.8 m) and a deck 25 ft wide.

Who owns East Side River RD over Chickwolnepy Stream?

It is owned by the State Highway Agency.