US Bridges

Van Kennen RD over Plum Brook

Good

St. Lawrence County, New York · 2.5 MI NW of Brookdale · Structure no. 000000003221450

Built
1981
44 years old, rebuilt 2000
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
29
2018 count
Owner
County
County Highway Agency

About this bridge

Van Kennen RD over Plum Brook is a steel stringer/multi-beam or girder carrying Van Kennen RD over Plum Brook in St. Lawrence County, New York. It was built in 1981 and reconstructed in 2000, so it is 44 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 29 vehicles a day, roughly 15% of them trucks, projected to reach 41 by 2038. The structure is 35 ft (10.7 m) long and 20 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesVan Kennen RD
CrossesPlum Brook
Location2.5 MI NW of Brookdale
Coordinates44.82176, -74.91246
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span33 ft (10 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2018)
Projected traffic41 by 2038
Trucks15%
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$374,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Van Kennen RD over Plum Brook built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2000.

What condition is Van Kennen RD over Plum 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 June 2023.

How much traffic does Van Kennen RD over Plum Brook carry?

About 29 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is Van Kennen RD over Plum Brook?

The structure is 35 ft (10.7 m) long with a longest span of 33 ft (10 m) and a deck 20 ft wide.

Who owns Van Kennen RD over Plum Brook?

It is owned by the County Highway Agency.