US Bridges

Old Nh 9 over Granite Lake Outlet

Fair

Cheshire County, New Hampshire · 0.7 MI from Stoddard Tl · Structure no. 017800700011900

Built
1932
93 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
490
2023 count
Owner
State
State Highway Agency

About this bridge

Old Nh 9 over Granite Lake Outlet is a concrete continuous culvert carrying Old Nh 9 over Granite Lake Outlet in Cheshire County, New Hampshire. It was built in 1932, so it is 93 years old, older 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 5 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 490 vehicles a day, roughly 7% of them trucks, projected to reach 725 by 2043. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesOld Nh 9
CrossesGranite Lake Outlet
Location0.7 MI from Stoddard Tl
RouteState Highway 9
CountyCheshire County
StateNew Hampshire
Coordinates43.01413, -72.14888
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.3 US tons
Inventory rating34.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length26 ft (7.9 m)
Longest span26 ft (7.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic490 (2023)
Projected traffic725 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
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 Old Nh 9 over Granite Lake Outlet built?

It was built in 1932, making it 93 years old in 2025.

What condition is Old Nh 9 over Granite Lake Outlet 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 June 2024.

How much traffic does Old Nh 9 over Granite Lake Outlet carry?

About 490 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Old Nh 9 over Granite Lake Outlet?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.9 m).

Who owns Old Nh 9 over Granite Lake Outlet?

It is owned by the State Highway Agency.