US Bridges

SH 11 over Canal Creek;pierce Br.

Good

Clearwater County, Idaho · At Pierce Ncl · Structure no. 000000000010320

Built
1975
50 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
210
2023 count
Owner
State
State Highway Agency

About this bridge

SH 11 over Canal Creek;pierce Br. is a prestressed concrete stringer/multi-beam or girder carrying SH 11 over Canal Creek;pierce Br. in Clearwater County, Idaho. It was built in 1975, so it is 50 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 210 vehicles a day, roughly 62% of them trucks, projected to reach 315 by 2042. The structure is 39 ft (11.9 m) long and 45 ft wide.

CarriesSH 11
CrossesCanal Creek;pierce Br.
LocationAt Pierce Ncl
RouteState Highway 11
StateIdaho
Coordinates46.49239, -115.80006
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than 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 rating73 US tons
Inventory rating44 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span39 ft (11.9 m)
Deck width45 ft (13.8 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2023)
Projected traffic315 by 2042
Trucks62%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 11 over Canal Creek;pierce Br. built?

It was built in 1975, making it 50 years old in 2025.

What condition is SH 11 over Canal Creek;pierce Br. in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does SH 11 over Canal Creek;pierce Br. carry?

About 210 vehicles per day (2023 count), of which roughly 62% are trucks.

How long is SH 11 over Canal Creek;pierce Br.?

The structure is 39 ft (11.9 m) long with a longest span of 39 ft (11.9 m) and a deck 45 ft wide.

Who owns SH 11 over Canal Creek;pierce Br.?

It is owned by the State Highway Agency.