US Bridges

SMA8323;SOUTH Side over New York Canal

Fair

Canyon County, Idaho · 3.5S. 1.5E. Nampa Cty Ctr · Structure no. 000000000021840

Built
1977
48 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
79 ft
2 main spans
Daily traffic
2,400
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

SMA8323;SOUTH Side over New York Canal is a prestressed concrete tee beam carrying SMA8323;SOUTH Side over New York Canal in Canyon County, Idaho. It was built in 1977, so it is 48 years old, older than the Idaho average of 45.3 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 2,400 vehicles a day, roughly 12% of them trucks, projected to reach 3,600 by 2042. The structure is 79 ft (24.1 m) long and 48 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSMA8323;SOUTH Side
CrossesNew York Canal
Location3.5S. 1.5E. Nampa Cty Ctr
RouteCity Street 8323
CountyCanyon County
StateIdaho
Coordinates43.52538, -116.53296
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length79 ft (24.1 m)
Longest span39 ft (11.9 m)
Deck width48 ft (14.6 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2023)
Projected traffic3,600 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SMA8323;SOUTH Side over New York Canal built?

It was built in 1977, making it 48 years old in 2025.

What condition is SMA8323;SOUTH Side over New York Canal 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 February 2024.

How much traffic does SMA8323;SOUTH Side over New York Canal carry?

About 2,400 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is SMA8323;SOUTH Side over New York Canal?

The structure is 79 ft (24.1 m) long with a longest span of 39 ft (11.9 m) and a deck 48 ft wide.

Who owns SMA8323;SOUTH Side over New York Canal?

It is owned by the City or Municipal Highway Agency.