US Bridges

Military Turnpike over Salmon River

Poor

Clinton County, New York · 1.5MI W JCT of SH22&I87 · Structure no. 000000003335820

Built
1929
96 years old, rebuilt 1972
Condition
Poor
inspected May 2024
Type
Arch - Deck
Concrete
Length
48 ft
1 main span
Daily traffic
3,291
2021 count
Owner
County
County Highway Agency

About this bridge

Military Turnpike over Salmon River is a concrete arch - deck carrying Military Turnpike over Salmon River in Clinton County, New York. It was built in 1929 and reconstructed in 1972, so it is 96 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.

It carries about 3,291 vehicles a day, roughly 4% of them trucks, projected to reach 4,071 by 2041. The structure is 48 ft (14.6 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMilitary Turnpike
CrossesSalmon River
Location1.5MI W JCT of SH22&I87
Coordinates44.6511, -73.51223
Functional classUrban Collector

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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating23 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span46 ft (14 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,291 (2021)
Projected traffic4,071 by 2041
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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$493,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Military Turnpike over Salmon River built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1972.

What condition is Military Turnpike over Salmon 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 May 2024.

How much traffic does Military Turnpike over Salmon River carry?

About 3,291 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Military Turnpike over Salmon River?

The structure is 48 ft (14.6 m) long with a longest span of 46 ft (14 m) and a deck 34 ft wide.

Who owns Military Turnpike over Salmon River?

It is owned by the County Highway Agency.