US Bridges

Harper Road over Moses Kill

Good

Washington County, New York · 1.9 MI West of S Argyle · Structure no. 000000003306560

Built
1942
83 years old, rebuilt 2003
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
12
2017 count
Owner
County
County Highway Agency

About this bridge

Harper Road over Moses Kill is a steel stringer/multi-beam or girder carrying Harper Road over Moses Kill in Washington County, New York. It was built in 1942 and reconstructed in 2003, so it is 83 years old, older 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 12 vehicles a day, roughly 10% of them trucks, projected to reach 17 by 2037. The structure is 51 ft (15.5 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesHarper Road
CrossesMoses Kill
Location1.9 MI West of S Argyle
Coordinates43.18307, -73.52775
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length51 ft (15.5 m)
Longest span48 ft (14.6 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12 (2017)
Projected traffic17 by 2037
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$998,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Harper Road over Moses Kill built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 2003.

What condition is Harper Road over Moses Kill 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 May 2023.

How much traffic does Harper Road over Moses Kill carry?

About 12 vehicles per day (2017 count), of which roughly 10% are trucks.

How long is Harper Road over Moses Kill?

The structure is 51 ft (15.5 m) long with a longest span of 48 ft (14.6 m) and a deck 27 ft wide.

Who owns Harper Road over Moses Kill?

It is owned by the County Highway Agency.