US Bridges

County Road 27 over Plumb Brook

Fair

St. Lawrence County, New York · 2.4 MI South of Degrasse · Structure no. 000000003341790

Built
1975
50 years old
Condition
Fair
inspected September 2023
Type
Culvert
Steel
Length
43 ft
3 main spans
Daily traffic
606
2019 count
Owner
County
County Highway Agency

About this bridge

County Road 27 over Plumb Brook is a steel culvert carrying County Road 27 over Plumb Brook in St. Lawrence County, New York. It was built in 1975, so it is 50 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 606 vehicles a day, roughly 12% of them trucks, projected to reach 632 by 2041. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 27
CrossesPlumb Brook
Location2.4 MI South of Degrasse
RouteCounty Highway 0
CountySt. Lawrence County
StateNew York
Coordinates44.3187, -75.08439
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82.6 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic606 (2019)
Projected traffic632 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$335,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 27 over Plumb Brook built?

It was built in 1975, making it 50 years old in 2025.

What condition is County Road 27 over Plumb 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 September 2023.

How much traffic does County Road 27 over Plumb Brook carry?

About 606 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is County Road 27 over Plumb Brook?

The structure is 43 ft (13.1 m) long with a longest span of 11 ft (3.3 m).

Who owns County Road 27 over Plumb Brook?

It is owned by the County Highway Agency.