US Bridges

Spruce Mountn RD over S Br Grasse River

Fair

St. Lawrence County, New York · 5.5 MI NW Cranberry Lake · Structure no. 000000001077960

Built
2002
23 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
1 main span
Daily traffic
10
2009 count
Owner
State
Other State Agency

About this bridge

Spruce Mountn RD over S Br Grasse River is a steel stringer/multi-beam or girder carrying Spruce Mountn RD over S Br Grasse River in St. Lawrence County, New York. It was built in 2002, so it is 23 years old, younger than the New York average of 53 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 10 vehicles a day, projected to reach 14 by 2029. The structure is 60 ft (18.3 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSpruce Mountn RD
CrossesS Br Grasse River
Location5.5 MI NW Cranberry Lake
RouteState Lands Road 0
CountySt. Lawrence County
StateNew York
Coordinates44.28831, -74.8858
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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating67 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span58 ft (17.7 m)
Deck width20 ft (6.1 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2009)
Projected traffic14 by 2029
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$382,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Spruce Mountn RD over S Br Grasse River built?

It was built in 2002, making it 23 years old in 2025.

What condition is Spruce Mountn RD over S Br Grasse River 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 May 2024.

How much traffic does Spruce Mountn RD over S Br Grasse River carry?

About 10 vehicles per day (2009 count).

How long is Spruce Mountn RD over S Br Grasse River?

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.7 m) and a deck 20 ft wide.

Who owns Spruce Mountn RD over S Br Grasse River?

It is owned by the Other State Agency.