US Bridges

RTE 9 over Schroon River

Good

Essex County, New York · 2 MI N JCT Rtes 9 & 74 · Structure no. 000000001005800

Built
1999
26 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
89 ft
1 main span
Daily traffic
707
2020 count
Owner
State
State Highway Agency

About this bridge

RTE 9 over Schroon River is a steel stringer/multi-beam or girder carrying RTE 9 over Schroon River in Essex County, New York. It was built in 1999, so it is 26 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 707 vehicles a day, roughly 12% of them trucks, projected to reach 737 by 2041. The structure is 89 ft (27.1 m) long and 35 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesRTE 9
CrossesSchroon River
Location2 MI N JCT Rtes 9 & 74
RouteState Highway 9
Coordinates43.89961, -73.74843
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating63.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length89 ft (27.1 m)
Longest span85 ft (25.9 m)
Deck width35 ft (10.8 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic707 (2020)
Projected traffic737 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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$1.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 9 over Schroon River built?

It was built in 1999, making it 26 years old in 2025.

What condition is RTE 9 over Schroon 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 August 2023.

How much traffic does RTE 9 over Schroon River carry?

About 707 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is RTE 9 over Schroon River?

The structure is 89 ft (27.1 m) long with a longest span of 85 ft (25.9 m) and a deck 35 ft wide.

Who owns RTE 9 over Schroon River?

It is owned by the State Highway Agency.