US Bridges

RTE 418 over Schroon River

Fair

Warren County, New York · 0.2 MI SW JCT 9 & 418 · Structure no. 000000001048240

Built
1933
92 years old, rebuilt 2000
Condition
Fair
inspected July 2023
Type
Truss - Thru
Steel
Length
165 ft
1 main span
Daily traffic
2,884
2018 count
Owner
State
State Highway Agency

About this bridge

RTE 418 over Schroon River is a steel truss - thru carrying RTE 418 over Schroon River in Warren County, New York. It was built in 1933 and reconstructed in 2000, so it is 92 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 2,884 vehicles a day, roughly 6% of them trucks, projected to reach 4,038 by 2038. The structure is 165 ft (50.3 m) long and 26 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE 418
CrossesSchroon River
Location0.2 MI SW JCT 9 & 418
RouteState Highway 418
CountyWarren County
StateNew York
Coordinates43.49125, -73.77049
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckOther
Main spans1
Design loadHS 20
Structure length165 ft (50.3 m)
Longest span160 ft (48.7 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic2,884 (2018)
Projected traffic4,038 by 2038
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$6.6 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was RTE 418 over Schroon River built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 2000.

What condition is RTE 418 over Schroon River 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 July 2023.

How much traffic does RTE 418 over Schroon River carry?

About 2,884 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is RTE 418 over Schroon River?

The structure is 165 ft (50.3 m) long with a longest span of 160 ft (48.7 m) and a deck 26 ft wide.

Who owns RTE 418 over Schroon River?

It is owned by the State Highway Agency.