US Bridges

Garrison Road over Big Creek

Fair

St. Lawrence County, New York · 2.0 MI N of Harrisville · Structure no. 000000003341560

Built
1969
56 years old
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
43 ft
2 main spans
Daily traffic
130
2015 count
Owner
County
County Highway Agency

About this bridge

Garrison Road over Big Creek is a steel culvert carrying Garrison Road over Big Creek in St. Lawrence County, New York. It was built in 1969, so it is 56 years old, older 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 5 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 130 vehicles a day, roughly 12% of them trucks, projected to reach 182 by 2035. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesGarrison Road
CrossesBig Creek
Location2.0 MI N of Harrisville
CountySt. Lawrence County
StateNew York
Coordinates44.17237, -75.31722
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.8 US tons
Inventory rating21.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length43 ft (13.1 m)
Longest span20 ft (6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2015)
Projected traffic182 by 2035
Trucks12%
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$289,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Garrison Road over Big Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Garrison Road over Big Creek 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 August 2023.

How much traffic does Garrison Road over Big Creek carry?

About 130 vehicles per day (2015 count), of which roughly 12% are trucks.

How long is Garrison Road over Big Creek?

The structure is 43 ft (13.1 m) long with a longest span of 20 ft (6 m).

Who owns Garrison Road over Big Creek?

It is owned by the County Highway Agency.