US Bridges

RTE 56 over Cold Brook

Good

St. Lawrence County, New York · 1 MI SE Village So Colton · Structure no. 000000001027240

Built
2012
13 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
132 ft
1 main span
Daily traffic
1,043
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 56 over Cold Brook is a steel stringer/multi-beam or girder carrying RTE 56 over Cold Brook in St. Lawrence County, New York. It was built in 2012, so it is 13 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 1,043 vehicles a day, roughly 15% of them trucks, projected to reach 1,049 by 2041. The structure is 132 ft (40.2 m) long and 36 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesRTE 56
CrossesCold Brook
Location1 MI SE Village So Colton
RouteState Highway 56
CountySt. Lawrence County
StateNew York
Coordinates44.49306, -74.87
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating100 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length132 ft (40.2 m)
Longest span127 ft (38.7 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,043 (2020)
Projected traffic1,049 by 2041
Trucks15%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 56 over Cold Brook built?

It was built in 2012, making it 13 years old in 2025.

What condition is RTE 56 over Cold 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 2024.

How much traffic does RTE 56 over Cold Brook carry?

About 1,043 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is RTE 56 over Cold Brook?

The structure is 132 ft (40.2 m) long with a longest span of 127 ft (38.7 m) and a deck 36 ft wide.

Who owns RTE 56 over Cold Brook?

It is owned by the State Highway Agency.