US Bridges

Hemlock Road over Susquehanna River

PoorPosted for load

Otsego County, New York · .5 MI SW of Colliersville · Structure no. 000000003354590

Built
1901
124 years old, rebuilt 1993
Condition
Poor
inspected August 2024
Type
Truss - Thru
Steel
Length
151 ft
1 main span
Daily traffic
23
2019 count
Owner
County
County Highway Agency

About this bridge

Hemlock Road over Susquehanna River is a steel truss - thru carrying Hemlock Road over Susquehanna River in Otsego County, New York. It was built in 1901 and reconstructed in 1993, so it is 124 years old, older than the New York average of 53 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 23 vehicles a day, roughly 11% of them trucks, projected to reach 32 by 2039. The structure is 151 ft (46 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesHemlock Road
CrossesSusquehanna River
Location.5 MI SW of Colliersville
RouteCounty Highway 0
Coordinates42.48509, -74.98893
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating20 US tons
Inventory rating12 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans1 (+1 approach)
Design loadHS 25 or greater
Structure length151 ft (46 m)
Longest span116 ft (35.3 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23 (2019)
Projected traffic32 by 2039
Trucks11%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$2.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hemlock Road over Susquehanna River built?

It was built in 1901, making it 124 years old in 2025. It was reconstructed in 1993.

What condition is Hemlock Road over Susquehanna River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Hemlock Road over Susquehanna River carry?

About 23 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is Hemlock Road over Susquehanna River?

The structure is 151 ft (46 m) long with a longest span of 116 ft (35.3 m) and a deck 16 ft wide.

Who owns Hemlock Road over Susquehanna River?

It is owned by the County Highway Agency.