US Bridges

Stc 3740;NOTUS RD over Riverside Canal

Fair

Canyon County, Idaho · 3.0 S. Notus · Structure no. 000000000019700

Built
1940
85 years old, rebuilt 1972
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
2,500
2023 count
Owner
Local
Other Local Agency

About this bridge

Stc 3740;NOTUS RD over Riverside Canal is a prestressed concrete stringer/multi-beam or girder carrying Stc 3740;NOTUS RD over Riverside Canal in Canyon County, Idaho. It was built in 1940 and reconstructed in 1972, so it is 85 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 6 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 2,500 vehicles a day, roughly 7% of them trucks, projected to reach 3,750 by 2042. The structure is 24 ft (7.3 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesStc 3740;NOTUS RD
CrossesRiverside Canal
Location3.0 S. Notus
RouteCounty Highway 3740
CountyCanyon County
StateIdaho
Coordinates43.68178, -116.80286
Functional classRural Major 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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
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 typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2023)
Projected traffic3,750 by 2042
Trucks7%
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

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stc 3740;NOTUS RD over Riverside Canal built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1972.

What condition is Stc 3740;NOTUS RD over Riverside 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 October 2024.

How much traffic does Stc 3740;NOTUS RD over Riverside Canal carry?

About 2,500 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Stc 3740;NOTUS RD over Riverside Canal?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 32 ft wide.

Who owns Stc 3740;NOTUS RD over Riverside Canal?

It is owned by the Other Local Agency.