US Bridges

NH175 over Beebe River

Fair

Grafton County, New Hampshire · 3.5 MI N JCT RTE 3 · Structure no. 003501440009200

Built
1934
91 years old
Condition
Fair
inspected August 2023
Type
Arch - Deck
Concrete
Length
83 ft
1 main span
Daily traffic
1,051
2023 count
Owner
State
State Highway Agency

About this bridge

NH175 over Beebe River is a concrete arch - deck carrying NH175 over Beebe River in Grafton County, New Hampshire. It was built in 1934, so it is 91 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 1,051 vehicles a day, roughly 4% of them trucks, projected to reach 1,555 by 2043. The structure is 83 ft (25.3 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNH175
CrossesBeebe River
Location3.5 MI N JCT RTE 3
RouteState Highway 175
CountyGrafton County
StateNew Hampshire
Coordinates43.82116, -71.6404
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating45.4 US tons
Inventory rating32.4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length83 ft (25.3 m)
Longest span83 ft (25.3 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,051 (2023)
Projected traffic1,555 by 2043
Trucks4%
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 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 NH175 over Beebe River built?

It was built in 1934, making it 91 years old in 2025.

What condition is NH175 over Beebe River 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 August 2023.

How much traffic does NH175 over Beebe River carry?

About 1,051 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NH175 over Beebe River?

The structure is 83 ft (25.3 m) long with a longest span of 83 ft (25.3 m) and a deck 28 ft wide.

Who owns NH175 over Beebe River?

It is owned by the State Highway Agency.