US Bridges

County Road 20 over Tanner Creek

Good

St. Lawrence County, New York · 2.2 MI NE of Kents Cornrs · Structure no. 000000003341360

Built
2017
8 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
82 ft
1 main span
Daily traffic
369
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 20 over Tanner Creek is a steel stringer/multi-beam or girder carrying County Road 20 over Tanner Creek in St. Lawrence County, New York. It was built in 2017, so it is 8 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 369 vehicles a day, roughly 3% of them trucks, projected to reach 517 by 2038. The structure is 82 ft (25 m) long and 33 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

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CarriesCounty Road 20
CrossesTanner Creek
Location2.2 MI NE of Kents Cornrs
RouteCounty Highway 0
CountySt. Lawrence County
StateNew York
Coordinates44.45059, -75.25829
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length82 ft (25 m)
Longest span81 ft (24.7 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic369 (2018)
Projected traffic517 by 2038
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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$1.1 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 20 over Tanner Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is County Road 20 over Tanner Creek 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 October 2023.

How much traffic does County Road 20 over Tanner Creek carry?

About 369 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is County Road 20 over Tanner Creek?

The structure is 82 ft (25 m) long with a longest span of 81 ft (24.7 m) and a deck 33 ft wide.

Who owns County Road 20 over Tanner Creek?

It is owned by the County Highway Agency.