US Bridges

Nh 25 NH118 over Baker River

Fair

Grafton County, New Hampshire · 3.6 MI from Rumney Tl · Structure no. 026901460012000

Built
1937
88 years old, rebuilt 1983
Condition
Fair
inspected September 2023
Type
Girder and Floorbeam System
Steel
Length
100 ft
1 main span
Daily traffic
3,418
2023 count
Owner
State
State Highway Agency

About this bridge

Nh 25 NH118 over Baker River is a steel girder and floorbeam system carrying Nh 25 NH118 over Baker River in Grafton County, New Hampshire. It was built in 1937 and reconstructed in 1983, so it is 88 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 3,418 vehicles a day, roughly 7% of them trucks, projected to reach 5,058 by 2043. The structure is 100 ft (30.5 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNh 25 NH118
CrossesBaker River
Location3.6 MI from Rumney Tl
RouteState Highway 25
CountyGrafton County
StateNew Hampshire
Coordinates43.86827, -71.91121
Functional classRural Minor Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating25.4 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length100 ft (30.5 m)
Longest span94 ft (28.8 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,418 (2023)
Projected traffic5,058 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Nh 25 NH118 over Baker River built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1983.

What condition is Nh 25 NH118 over Baker 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 September 2023.

How much traffic does Nh 25 NH118 over Baker River carry?

About 3,418 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Nh 25 NH118 over Baker River?

The structure is 100 ft (30.5 m) long with a longest span of 94 ft (28.8 m) and a deck 32 ft wide.

Who owns Nh 25 NH118 over Baker River?

It is owned by the State Highway Agency.