US Bridges

Osborn RD over Mill Creek Branch

Fair

Tehama County, California · 2.7 MI N Paskenta RD · Structure no. 08C0211

Built
1942
83 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
40
2007 count
Owner
County
County Highway Agency

About this bridge

Osborn RD over Mill Creek Branch is a steel stringer/multi-beam or girder carrying Osborn RD over Mill Creek Branch in Tehama County, California. It was built in 1942, so it is 83 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 40 vehicles a day, roughly 1% of them trucks, projected to reach 55 by 2047. The structure is 30 ft (9.1 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesOsborn RD
CrossesMill Creek Branch
Location2.7 MI N Paskenta RD
RouteCounty Highway 0
CountyTehama County
StateCalifornia
Coordinates39.94504, -122.47409
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2007)
Projected traffic55 by 2047
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Osborn RD over Mill Creek Branch built?

It was built in 1942, making it 83 years old in 2025.

What condition is Osborn RD over Mill Creek Branch 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 2025.

How much traffic does Osborn RD over Mill Creek Branch carry?

About 40 vehicles per day (2007 count), of which roughly 1% are trucks.

How long is Osborn RD over Mill Creek Branch?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 22 ft wide.

Who owns Osborn RD over Mill Creek Branch?

It is owned by the County Highway Agency.