US Bridges

RTE 166 over Susquehanna River

Good

Otsego County, New York · JCT SH 166 & Susquehanna · Structure no. 000000001038880

Built
1983
42 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
127 ft
1 main span
Daily traffic
920
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 166 over Susquehanna River is a steel stringer/multi-beam or girder carrying RTE 166 over Susquehanna River in Otsego County, New York. It was built in 1983, so it is 42 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 920 vehicles a day, roughly 10% of them trucks, projected to reach 959 by 2041. The structure is 127 ft (38.7 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesRTE 166
CrossesSusquehanna River
LocationJCT SH 166 & Susquehanna
RouteState Highway 166
Coordinates42.59097, -74.93249
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating69 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length127 ft (38.7 m)
Longest span122 ft (37.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic920 (2020)
Projected traffic959 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 166 over Susquehanna River built?

It was built in 1983, making it 42 years old in 2025.

What condition is RTE 166 over Susquehanna River 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 June 2024.

How much traffic does RTE 166 over Susquehanna River carry?

About 920 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is RTE 166 over Susquehanna River?

The structure is 127 ft (38.7 m) long with a longest span of 122 ft (37.1 m) and a deck 32 ft wide.

Who owns RTE 166 over Susquehanna River?

It is owned by the State Highway Agency.