US Bridges

Pinkham B Road over Bumpus Brook

Fair

Coos County, New Hampshire · 0.46 MI SE JCT US 2 · Structure no. 021801550005700

Built
1945
80 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
87
2023 count
Owner
State
State Highway Agency

About this bridge

Pinkham B Road over Bumpus Brook is a concrete slab carrying Pinkham B Road over Bumpus Brook in Coos County, New Hampshire. It was built in 1945, so it is 80 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 87 vehicles a day, roughly 4% of them trucks, projected to reach 128 by 2043. The structure is 23 ft (7 m) long and 29 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesPinkham B Road
CrossesBumpus Brook
Location0.46 MI SE JCT US 2
RouteState Highway 0
CountyCoos County
StateNew Hampshire
Coordinates44.37075, -71.26376
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 protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.2 US tons
Inventory rating20.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic87 (2023)
Projected traffic128 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 Pinkham B Road over Bumpus Brook built?

It was built in 1945, making it 80 years old in 2025.

What condition is Pinkham B Road over Bumpus 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 April 2024.

How much traffic does Pinkham B Road over Bumpus Brook carry?

About 87 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Pinkham B Road over Bumpus Brook?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 29 ft wide.

Who owns Pinkham B Road over Bumpus Brook?

It is owned by the State Highway Agency.