US Bridges

County Road 31A over Big Sucker Brook

Good

St. Lawrence County, New York · 3.5 MI NE of Pine Grove · Structure no. 000000003342050

Built
2023
2 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
197
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 31A over Big Sucker Brook is a prestressed concrete box beam or girders - multiple carrying County Road 31A over Big Sucker Brook in St. Lawrence County, New York. It was built in 2023, so it is 2 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.

It carries about 197 vehicles a day, roughly 14% of them trucks, projected to reach 276 by 2038. The structure is 55 ft (16.8 m) long and 32 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesCounty Road 31A
CrossesBig Sucker Brook
Location3.5 MI NE of Pine Grove
RouteCounty Highway 0
CountySt. Lawrence County
StateNew York
Coordinates44.8115, -75.25355
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating57 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length55 ft (16.8 m)
Longest span51 ft (15.5 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic197 (2018)
Projected traffic276 by 2038
Trucks14%
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$696,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 31A over Big Sucker Brook built?

It was built in 2023, making it 2 years old in 2025.

What condition is County Road 31A over Big Sucker 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 September 2023.

How much traffic does County Road 31A over Big Sucker Brook carry?

About 197 vehicles per day (2018 count), of which roughly 14% are trucks.

How long is County Road 31A over Big Sucker Brook?

The structure is 55 ft (16.8 m) long with a longest span of 51 ft (15.5 m) and a deck 32 ft wide.

Who owns County Road 31A over Big Sucker Brook?

It is owned by the County Highway Agency.