US Bridges

County Road 34 over Trout Brook

Fair

St. Lawrence County, New York · .2M W RTE34 and RTE35 Int · Structure no. 000000003341630

Built
1925
100 years old, rebuilt 1981
Condition
Fair
inspected November 2023
Type
Arch - Deck
Concrete
Length
52 ft
1 main span
Daily traffic
652
2021 count
Owner
County
County Highway Agency

About this bridge

County Road 34 over Trout Brook is a concrete arch - deck carrying County Road 34 over Trout Brook in St. Lawrence County, New York. It was built in 1925 and reconstructed in 1981, so it is 100 years old, older 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 652 vehicles a day, roughly 9% of them trucks, projected to reach 913 by 2041. The structure is 52 ft (15.8 m) long and 39 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesCounty Road 34
CrossesTrout Brook
Location.2M W RTE34 and RTE35 Int
RouteCounty Highway 0
CountySt. Lawrence County
StateNew York
Coordinates44.68701, -75.08647
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating51 US tons
Inventory rating22.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span33 ft (10 m)
Deck width39 ft (12 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic652 (2021)
Projected traffic913 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 34 over Trout Brook built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1981.

What condition is County Road 34 over Trout 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 November 2023.

How much traffic does County Road 34 over Trout Brook carry?

About 652 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is County Road 34 over Trout Brook?

The structure is 52 ft (15.8 m) long with a longest span of 33 ft (10 m) and a deck 39 ft wide.

Who owns County Road 34 over Trout Brook?

It is owned by the County Highway Agency.