US Bridges

STC9584;CHERRY LN over Black Canyon Canal

Fair

Gem County, Idaho · 1.3 S. 1.8 E. Emmett · Structure no. 000000000028060

Built
1979
46 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
490
2023 count
Owner
County
County Highway Agency

About this bridge

STC9584;CHERRY LN over Black Canyon Canal is a prestressed concrete tee beam carrying STC9584;CHERRY LN over Black Canyon Canal in Gem County, Idaho. It was built in 1979, so it is 46 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 490 vehicles a day, projected to reach 735 by 2042. The structure is 66 ft (20.1 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSTC9584;CHERRY LN
CrossesBlack Canyon Canal
Location1.3 S. 1.8 E. Emmett
RouteCounty Highway 9584
CountyGem County
StateIdaho
Coordinates43.85739, -116.4655
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating32.7 US tons
Inventory rating22.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length66 ft (20.1 m)
Longest span64 ft (19.5 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic490 (2023)
Projected traffic735 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$642,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC9584;CHERRY LN over Black Canyon Canal built?

It was built in 1979, making it 46 years old in 2025.

What condition is STC9584;CHERRY LN over Black Canyon 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 2023.

How much traffic does STC9584;CHERRY LN over Black Canyon Canal carry?

About 490 vehicles per day (2023 count).

How long is STC9584;CHERRY LN over Black Canyon Canal?

The structure is 66 ft (20.1 m) long with a longest span of 64 ft (19.5 m) and a deck 28 ft wide.

Who owns STC9584;CHERRY LN over Black Canyon Canal?

It is owned by the County Highway Agency.