US Bridges

Valley Road over Dan Hole River

Good

Carroll County, New Hampshire · 2.8 MI FR Old Nh RTE 16 · Structure no. 020401230023300

Built
2007
18 years old
Condition
Good
inspected October 2024
Type
Frame
Concrete
Length
31 ft
1 main span
Daily traffic
216
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Valley Road over Dan Hole River is a concrete frame carrying Valley Road over Dan Hole River in Carroll County, New Hampshire. It was built in 2007, so it is 18 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 216 vehicles a day, roughly 4% of them trucks, projected to reach 319 by 2043. The structure is 31 ft (9.3 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesValley Road
CrossesDan Hole River
Location2.8 MI FR Old Nh RTE 16
Coordinates43.75195, -71.19277
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 protection9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length31 ft (9.3 m)
Longest span28 ft (8.4 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic216 (2023)
Projected traffic319 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Valley Road over Dan Hole River built?

It was built in 2007, making it 18 years old in 2025.

What condition is Valley Road over Dan Hole 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 October 2024.

How much traffic does Valley Road over Dan Hole River carry?

About 216 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Valley Road over Dan Hole River?

The structure is 31 ft (9.3 m) long with a longest span of 28 ft (8.4 m) and a deck 27 ft wide.

Who owns Valley Road over Dan Hole River?

It is owned by the City or Municipal Highway Agency.