US Bridges

County Road 24 over Dean Brook

Good

St. Lawrence County, New York · 4.4 MI SW of Pierrepont · Structure no. 000000003371820

Built
2022
3 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
—
2024 count
Owner
County
County Highway Agency

About this bridge

County Road 24 over Dean Brook is a prestressed concrete box beam or girders - multiple carrying County Road 24 over Dean Brook in St. Lawrence County, New York. It was built in 2022, so it is 3 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

No traffic count is recorded. The structure is 47 ft (14.3 m) long and 33 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesCounty Road 24
CrossesDean Brook
Location4.4 MI SW of Pierrepont
RouteCounty Highway 0
Coordinates44.49197, -75.06076
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
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
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 rating87 US tons
Inventory rating52 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length47 ft (14.3 m)
Longest span43 ft (13.1 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic—
Projected traffic—
Trucks8%
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

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$376,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 24 over Dean Brook built?

It was built in 2022, making it 3 years old in 2025.

What condition is County Road 24 over Dean 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 November 2024.

How much traffic does County Road 24 over Dean Brook carry?

No traffic count is recorded for this structure.

How long is County Road 24 over Dean Brook?

The structure is 47 ft (14.3 m) long with a longest span of 43 ft (13.1 m) and a deck 33 ft wide.

Who owns County Road 24 over Dean Brook?

It is owned by the County Highway Agency.