US Bridges

Durgin Bridge Road over Cold River

PoorPosted for load

Carroll County, New Hampshire · 100 Ft FR Bearcamppond R · Structure no. 023302260011900

Built
1869
156 years old, rebuilt 1960
Condition
Poor
inspected September 2024
Type
Truss - Thru
Wood or Timber
Length
96 ft
1 main span
Daily traffic
164
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Durgin Bridge Road over Cold River is a wood or timber truss - thru carrying Durgin Bridge Road over Cold River in Carroll County, New Hampshire. It was built in 1869 and reconstructed in 1960, so it is 156 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 164 vehicles a day, roughly 4% of them trucks, projected to reach 242 by 2043. The structure is 96 ft (29.3 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesDurgin Bridge Road
CrossesCold River
Location100 Ft FR Bearcamppond R
Coordinates43.85587, -71.3643
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 16 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating10 US tons
Inventory rating6 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 15
Structure length96 ft (29.3 m)
Longest span79 ft (24.1 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deck10 ft (2.9 m)

Traffic and service

Average daily traffic164 (2023)
Projected traffic242 by 2043
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
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 Durgin Bridge Road over Cold River built?

It was built in 1869, making it 156 years old in 2025. It was reconstructed in 1960.

What condition is Durgin Bridge Road over Cold River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Durgin Bridge Road over Cold River carry?

About 164 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Durgin Bridge Road over Cold River?

The structure is 96 ft (29.3 m) long with a longest span of 79 ft (24.1 m) and a deck 16 ft wide.

Who owns Durgin Bridge Road over Cold River?

It is owned by the City or Municipal Highway Agency.