US Bridges

US 4 over Rec Trail Mascoma River

Good

Grafton County, New Hampshire · 1.2 MI from Enfield T.L. · Structure no. 014401890012600

Built
2015
10 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
444 ft
3 main spans
Daily traffic
10,801
2023 count
Owner
State
State Highway Agency

About this bridge

US 4 over Rec Trail Mascoma River is a steel continuous stringer/multi-beam or girder carrying US 4 over Rec Trail Mascoma River in Grafton County, New Hampshire. It was built in 2015, so it is 10 years old, younger than the New Hampshire average of 56.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,801 vehicles a day, roughly 7% of them trucks, projected to reach 15,985 by 2043. The structure is 444 ft (135.2 m) long and 47 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

Open in Google Maps
CarriesUS 4
CrossesRec Trail Mascoma River
Location1.2 MI from Enfield T.L.
RouteU.S. Route 4
CountyGrafton County
StateNew Hampshire
Coordinates43.64735, -72.18842
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.6 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length444 ft (135.2 m)
Longest span196 ft (59.7 m)
Deck width47 ft (14.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,801 (2023)
Projected traffic15,985 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible 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)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 4 over Rec Trail Mascoma River built?

It was built in 2015, making it 10 years old in 2025.

What condition is US 4 over Rec Trail Mascoma River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does US 4 over Rec Trail Mascoma River carry?

About 10,801 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US 4 over Rec Trail Mascoma River?

The structure is 444 ft (135.2 m) long with a longest span of 196 ft (59.7 m) and a deck 47 ft wide.

Who owns US 4 over Rec Trail Mascoma River?

It is owned by the State Highway Agency.