US Bridges

Depot Street over Contoocook River

Good

Hillsborough County, New Hampshire · At Bennington Tl · Structure no. 000901840007100

Built
2013
12 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
96 ft
1 main span
Daily traffic
2,130
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Depot Street over Contoocook River is a steel stringer/multi-beam or girder carrying Depot Street over Contoocook River in Hillsborough County, New Hampshire. It was built in 2013, so it is 12 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 2,130 vehicles a day, roughly 4% of them trucks, projected to reach 3,152 by 2043. The structure is 96 ft (29.3 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesDepot Street
CrossesContoocook River
LocationAt Bennington Tl
Coordinates43.02593, -71.92849
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Last inspectionJune 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating99 US tons
Inventory rating96.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length96 ft (29.3 m)
Longest span93 ft (28.3 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,130 (2023)
Projected traffic3,152 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Depot Street over Contoocook River built?

It was built in 2013, making it 12 years old in 2025.

What condition is Depot Street over Contoocook 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 June 2024.

How much traffic does Depot Street over Contoocook River carry?

About 2,130 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Depot Street over Contoocook River?

The structure is 96 ft (29.3 m) long with a longest span of 93 ft (28.3 m) and a deck 32 ft wide.

Who owns Depot Street over Contoocook River?

It is owned by the City or Municipal Highway Agency.