US Bridges

Valley Road over Snows Brook

Fair

Grafton County, New Hampshire · 5.2 MI E Thorntonttl Tl · Structure no. 026601380011300

Built
1985
40 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
585
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Valley Road over Snows Brook is a steel stringer/multi-beam or girder carrying Valley Road over Snows Brook 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 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 585 vehicles a day, roughly 4% of them trucks, projected to reach 865 by 2043. The structure is 65 ft (19.8 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesValley Road
CrossesSnows Brook
Location5.2 MI E Thorntonttl Tl
CountyGrafton County
StateNew Hampshire
Coordinates43.95053, -71.50116
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.8 US tons
Inventory rating53.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length65 ft (19.8 m)
Longest span57 ft (17.4 m)
Deck width39 ft (12 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic585 (2023)
Projected traffic865 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 Snows Brook built?

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

What condition is Valley Road over Snows 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 August 2023.

How much traffic does Valley Road over Snows Brook carry?

About 585 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Valley Road over Snows Brook?

The structure is 65 ft (19.8 m) long with a longest span of 57 ft (17.4 m) and a deck 39 ft wide.

Who owns Valley Road over Snows Brook?

It is owned by the City or Municipal Highway Agency.