US Bridges

Pershall RD over B Line Canal

Fair

Owyhee County, Idaho · 1.0 S. 0.4 W. Marsing · Structure no. 000000000028245

Built
1960
65 years old
Condition
Fair
inspected February 2023
Type
Frame
Concrete
Length
26 ft
1 main span
Daily traffic
150
2023 count
Owner
Local
Other Local Agency

About this bridge

Pershall RD over B Line Canal is a concrete frame carrying Pershall RD over B Line Canal in Owyhee County, Idaho. It was built in 1960, so it is 65 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 150 vehicles a day, roughly 10% of them trucks, projected to reach 225 by 2039. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPershall RD
CrossesB Line Canal
Location1.0 S. 0.4 W. Marsing
RouteCounty Highway 0
CountyOwyhee County
StateIdaho
Coordinates43.53103, -116.82094
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.
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length26 ft (7.9 m)
Longest span26 ft (7.9 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic225 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Pershall RD over B Line Canal built?

It was built in 1960, making it 65 years old in 2025.

What condition is Pershall RD over B Line 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 Pershall RD over B Line Canal carry?

About 150 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Pershall RD over B Line Canal?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.9 m) and a deck 28 ft wide.

Who owns Pershall RD over B Line Canal?

It is owned by the Other Local Agency.