US Bridges

Bank Street Ext. over Mascoma River

Good

Grafton County, New Hampshire · .07 Mi. from Jct. US 4 · Structure no. 014401390012000

Built
1985
40 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
92 ft
1 main span
Daily traffic
2,381
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Bank Street Ext. over Mascoma River is a steel stringer/multi-beam or girder carrying Bank Street Ext. over Mascoma River in Grafton County, New Hampshire. It was built in 1985, so it is 40 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,381 vehicles a day, roughly 3% of them trucks, projected to reach 3,523 by 2043. The structure is 92 ft (28 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBank Street Ext.
CrossesMascoma River
Location.07 Mi. from Jct. US 4
RouteCity Street 0
Coordinates43.64413, -72.23719
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating58 US tons
Inventory rating36.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length92 ft (28 m)
Longest span88 ft (26.8 m)
Deck width37 ft (11.4 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,381 (2023)
Projected traffic3,523 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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)
NavigationNo navigation control on waterway

Frequently asked questions

When was Bank Street Ext. over Mascoma River built?

It was built in 1985, making it 40 years old in 2025.

What condition is Bank Street Ext. over 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 July 2024.

How much traffic does Bank Street Ext. over Mascoma River carry?

About 2,381 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Bank Street Ext. over Mascoma River?

The structure is 92 ft (28 m) long with a longest span of 88 ft (26.8 m) and a deck 37 ft wide.

Who owns Bank Street Ext. over Mascoma River?

It is owned by the City or Municipal Highway Agency.