US Bridges

Sunny Lane over Phyllis Canal

Fair

Canyon County, Idaho · In Nampa;sunny Lane · Structure no. 000000000027750

Built
1974
51 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
1,300
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sunny Lane over Phyllis Canal is a prestressed concrete tee beam carrying Sunny Lane over Phyllis Canal in Canyon County, Idaho. It was built in 1974, so it is 51 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 1,300 vehicles a day, roughly 10% of them trucks, projected to reach 1,950 by 2039. The structure is 26 ft (7.9 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSunny Lane
CrossesPhyllis Canal
LocationIn Nampa;sunny Lane
RouteCity Street 0
CountyCanyon County
StateIdaho
Coordinates43.58142, -116.5855
Functional classUrban 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 48 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.8 US tons
Inventory rating20.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width38 ft (11.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2023)
Projected traffic1,950 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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$660,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sunny Lane over Phyllis Canal built?

It was built in 1974, making it 51 years old in 2025.

What condition is Sunny Lane over Phyllis 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 Sunny Lane over Phyllis Canal carry?

About 1,300 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Sunny Lane over Phyllis Canal?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 38 ft wide.

Who owns Sunny Lane over Phyllis Canal?

It is owned by the City or Municipal Highway Agency.