US Bridges

3-12 over Dry Stream

Fair

Lake County, Oregon · 010 MI E of JCTB327 +3-10 · Structure no. 37C0013-1200100

Built
1981
44 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
161
2020 count
Owner
County
County Highway Agency

About this bridge

3-12 over Dry Stream is a prestressed concrete slab carrying 3-12 over Dry Stream 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 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 161 vehicles a day, roughly 2% of them trucks, projected to reach 176 by 2025. The structure is 32 ft (9.8 m) long and 32 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Carries3-12
CrossesDry Stream
Location010 MI E of JCTB327 +3-10
RouteCounty Highway 312
StateOregon
Coordinates42.42482, -119.88621
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic161 (2020)
Projected traffic176 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 Dry Stream built?

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

What condition is 3-12 over Dry Stream 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 July 2024.

How much traffic does 3-12 over Dry Stream carry?

About 161 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is 3-12 over Dry Stream?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 32 ft wide.

Who owns 3-12 over Dry Stream?

It is owned by the County Highway Agency.