US Bridges

Boys Camp Road over Bicknell Brook

Fair

Grafton County, New Hampshire · .9 MI FR Nh RTE 4A · Structure no. 007701720011200

Built
1947
78 years old, rebuilt 2016
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
32 ft
1 main span
Daily traffic
96
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Boys Camp Road over Bicknell Brook is a wood or timber slab carrying Boys Camp Road over Bicknell Brook in Grafton County, New Hampshire. It was built in 1947 and reconstructed in 2016, so it is 78 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 96 vehicles a day, roughly 4% of them trucks, projected to reach 142 by 2043. The structure is 32 ft (9.8 m) long and 16 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesBoys Camp Road
CrossesBicknell Brook
Location.9 MI FR Nh RTE 4A
CountyGrafton County
StateNew Hampshire
Coordinates43.58933, -72.07836
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating73.7 US tons
Inventory rating52.6 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2023)
Projected traffic142 by 2043
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Boys Camp Road over Bicknell Brook built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 2016.

What condition is Boys Camp Road over Bicknell 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 September 2024.

How much traffic does Boys Camp Road over Bicknell Brook carry?

About 96 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Boys Camp Road over Bicknell Brook?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 16 ft wide.

Who owns Boys Camp Road over Bicknell Brook?

It is owned by the City or Municipal Highway Agency.