US Bridges

County Road 47 over Trout Brook

Good

St. Lawrence County, New York · 2.5 Miles N of Southville · Structure no. 000000003341880

Built
2013
12 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
1 main span
Daily traffic
630
2019 count
Owner
County
County Highway Agency

About this bridge

County Road 47 over Trout Brook is a steel stringer/multi-beam or girder carrying County Road 47 over Trout Brook in St. Lawrence County, New York. It was built in 2013, so it is 12 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 630 vehicles a day, roughly 13% of them trucks, projected to reach 882 by 2039. The structure is 100 ft (30.5 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road 47
CrossesTrout Brook
Location2.5 Miles N of Southville
RouteCounty Highway 0
CountySt. Lawrence County
StateNew York
Coordinates44.71088, -74.84311
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106 US tons
Inventory rating63.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length100 ft (30.5 m)
Longest span99 ft (30.2 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic630 (2019)
Projected traffic882 by 2039
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 47 over Trout Brook built?

It was built in 2013, making it 12 years old in 2025.

What condition is County Road 47 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 October 2023.

How much traffic does County Road 47 over Trout Brook carry?

About 630 vehicles per day (2019 count), of which roughly 13% are trucks.

How long is County Road 47 over Trout Brook?

The structure is 100 ft (30.5 m) long with a longest span of 99 ft (30.2 m) and a deck 34 ft wide.

Who owns County Road 47 over Trout Brook?

It is owned by the County Highway Agency.