US Bridges

NH112 over Gordon Pond Brook

Fair

Grafton County, New Hampshire · 0.3 MI West of JCT RTE 3 · Structure no. 028401640015900

Built
1940
85 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
44 ft
1 main span
Daily traffic
2,448
2023 count
Owner
State
State Highway Agency

About this bridge

NH112 over Gordon Pond Brook is a steel stringer/multi-beam or girder carrying NH112 over Gordon Pond Brook in Grafton County, New Hampshire. It was built in 1940, so it is 85 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 2,448 vehicles a day, roughly 4% of them trucks, projected to reach 3,623 by 2043. The structure is 44 ft (13.3 m) long and 35 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesNH112
CrossesGordon Pond Brook
Location0.3 MI West of JCT RTE 3
RouteState Highway 112
CountyGrafton County
StateNew Hampshire
Coordinates44.03128, -71.69199
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length44 ft (13.3 m)
Longest span40 ft (12.2 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,448 (2023)
Projected traffic3,623 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 NH112 over Gordon Pond Brook built?

It was built in 1940, making it 85 years old in 2025.

What condition is NH112 over Gordon Pond 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 July 2024.

How much traffic does NH112 over Gordon Pond Brook carry?

About 2,448 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NH112 over Gordon Pond Brook?

The structure is 44 ft (13.3 m) long with a longest span of 40 ft (12.2 m) and a deck 35 ft wide.

Who owns NH112 over Gordon Pond Brook?

It is owned by the State Highway Agency.