US Bridges

County Route 35 over Trout Brook

Good

St. Lawrence County, New York · 4.0 MI S of West Potsdam · Structure no. 000000003341600

Built
2019
6 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
85 ft
1 main span
Daily traffic
604
2017 count
Owner
County
County Highway Agency

About this bridge

County Route 35 over Trout Brook is a prestressed concrete continuous box beam or girders - multiple carrying County Route 35 over Trout Brook in St. Lawrence County, New York. It was built in 2019, so it is 6 years old, younger than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 604 vehicles a day, roughly 8% of them trucks, projected to reach 846 by 2037. The structure is 85 ft (25.9 m) long and 33 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesCounty Route 35
CrossesTrout Brook
Location4.0 MI S of West Potsdam
RouteCounty Highway 0
Coordinates44.63936, -75.09022
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating67 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckNot applicable
Main spans1
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span81 ft (24.7 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic604 (2017)
Projected traffic846 by 2037
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$777,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Route 35 over Trout Brook built?

It was built in 2019, making it 6 years old in 2025.

What condition is County Route 35 over Trout Brook 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 September 2023.

How much traffic does County Route 35 over Trout Brook carry?

About 604 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is County Route 35 over Trout Brook?

The structure is 85 ft (25.9 m) long with a longest span of 81 ft (24.7 m) and a deck 33 ft wide.

Who owns County Route 35 over Trout Brook?

It is owned by the County Highway Agency.