US Bridges

Power Line Road over Mora Canal

Fair

Canyon County, Idaho · 9.5 S. 0.5 E. Nampa · Structure no. 000000000026800

Built
1987
38 years old
Condition
Fair
inspected February 2023
Type
Slab
Prestressed Concrete
Length
51 ft
2 main spans
Daily traffic
140
2023 count
Owner
Local
Other Local Agency

About this bridge

Power Line Road over Mora Canal is a prestressed concrete slab carrying Power Line Road over Mora Canal in Canyon County, Idaho. It was built in 1987, so it is 38 years old, younger 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 140 vehicles a day, roughly 10% of them trucks, projected to reach 210 by 2039. The structure is 51 ft (15.5 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPower Line Road
CrossesMora Canal
Location9.5 S. 0.5 E. Nampa
RouteCounty Highway 0
CountyCanyon County
StateIdaho
Coordinates43.44083, -116.55333
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span25 ft (7.6 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2023)
Projected traffic210 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Power Line Road over Mora Canal built?

It was built in 1987, making it 38 years old in 2025.

What condition is Power Line Road over Mora 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 2023.

How much traffic does Power Line Road over Mora Canal carry?

About 140 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Power Line Road over Mora Canal?

The structure is 51 ft (15.5 m) long with a longest span of 25 ft (7.6 m) and a deck 40 ft wide.

Who owns Power Line Road over Mora Canal?

It is owned by the Other Local Agency.