US Bridges

Sma 9773;LINDER RD over Phyllis Canal

Fair

Ada County, Idaho · 4.7 N. Meridian · Structure no. 000000000019780

Built
1990
35 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
22,000
2023 count
Owner
County
County Highway Agency

About this bridge

Sma 9773;LINDER RD over Phyllis Canal is a prestressed concrete stringer/multi-beam or girder carrying Sma 9773;LINDER RD over Phyllis Canal in Ada County, Idaho. It was built in 1990, so it is 35 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 22,000 vehicles a day, roughly 5% of them trucks, projected to reach 33,000 by 2042. The structure is 98 ft (29.9 m) long and 52 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesSma 9773;LINDER RD
CrossesPhyllis Canal
Location4.7 N. Meridian
RouteCounty Highway 3781
CountyAda County
StateIdaho
Coordinates43.67247, -116.41369
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating66 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadHS 25 or greater
Structure length98 ft (29.9 m)
Longest span79 ft (24.1 m)
Deck width52 ft (15.8 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,000 (2023)
Projected traffic33,000 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sma 9773;LINDER RD over Phyllis Canal built?

It was built in 1990, making it 35 years old in 2025.

What condition is Sma 9773;LINDER RD 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 9773;LINDER RD over Phyllis Canal carry?

About 22,000 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Sma 9773;LINDER RD over Phyllis Canal?

The structure is 98 ft (29.9 m) long with a longest span of 79 ft (24.1 m) and a deck 52 ft wide.

Who owns Sma 9773;LINDER RD over Phyllis Canal?

It is owned by the County Highway Agency.