US Bridges

Sma 8383;LONE Star over Phyllis Canal

Fair

Canyon County, Idaho · In Nampa;lone Star Rd. · Structure no. 000000000021860

Built
1973
52 years old, rebuilt 2002
Condition
Fair
inspected February 2023
Type
Tee Beam
Prestressed Concrete
Length
22 ft
1 main span
Daily traffic
19,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sma 8383;LONE Star over Phyllis Canal is a prestressed concrete tee beam carrying Sma 8383;LONE Star over Phyllis Canal in Canyon County, Idaho. It was built in 1973 and reconstructed in 2002, so it is 52 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 19,000 vehicles a day, roughly 1% of them trucks, projected to reach 28,500 by 2042. The structure is 22 ft (6.7 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSma 8383;LONE Star
CrossesPhyllis Canal
LocationIn Nampa;lone Star Rd.
RouteCity Street 8383
StateIdaho
Coordinates43.57597, -116.58228
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width60 ft (18.4 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,000 (2023)
Projected traffic28,500 by 2042
Trucks1%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sma 8383;LONE Star over Phyllis Canal built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2002.

What condition is Sma 8383;LONE Star 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 Sma 8383;LONE Star over Phyllis Canal carry?

About 19,000 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Sma 8383;LONE Star over Phyllis Canal?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 60 ft wide.

Who owns Sma 8383;LONE Star over Phyllis Canal?

It is owned by the City or Municipal Highway Agency.