US Bridges

3-12 over Hart Lake IRR Canal No 2

Good

Lake County, Oregon · 3.71 MI East FAS B327 · Structure no. 37C0033-1200371

Built
1981
44 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
185
2020 count
Owner
County
County Highway Agency

About this bridge

3-12 over Hart Lake IRR Canal No 2 is a prestressed concrete slab carrying 3-12 over Hart Lake IRR Canal No 2 in Lake County, Oregon. It was built in 1981, so it is 44 years old, younger than the Oregon average of 49.9 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 185 vehicles a day, roughly 2% of them trucks, projected to reach 210 by 2025. The structure is 41 ft (12.5 m) long and 28 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Carries3-12
CrossesHart Lake IRR Canal No 2
Location3.71 MI East FAS B327
RouteCounty Highway 0B329
StateOregon
Coordinates42.44537, -119.85596
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
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 rating65 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span37 ft (11.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic185 (2020)
Projected traffic210 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 3-12 over Hart Lake IRR Canal No 2 built?

It was built in 1981, making it 44 years old in 2025.

What condition is 3-12 over Hart Lake IRR Canal No 2 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 July 2024.

How much traffic does 3-12 over Hart Lake IRR Canal No 2 carry?

About 185 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is 3-12 over Hart Lake IRR Canal No 2?

The structure is 41 ft (12.5 m) long with a longest span of 37 ft (11.3 m) and a deck 28 ft wide.

Who owns 3-12 over Hart Lake IRR Canal No 2?

It is owned by the County Highway Agency.