US Bridges

Port Wine Ridge RD over Rock Creek Tributary

Fair

Sierra County, California · 0.45 MI E Council Hil RD · Structure no. 13C0050

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
25
2005 count
Owner
County
County Highway Agency

About this bridge

Port Wine Ridge RD over Rock Creek Tributary is a steel stringer/multi-beam or girder carrying Port Wine Ridge RD over Rock Creek Tributary in Sierra County, California. It was built in 1970, so it is 55 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 25 vehicles a day, roughly 25% of them trucks, projected to reach 52 by 2041. The structure is 23 ft (7.1 m) long and 14 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPort Wine Ridge RD
CrossesRock Creek Tributary
Location0.45 MI E Council Hil RD
RouteCounty Highway 0
CountySierra County
StateCalifornia
Coordinates39.59845, -120.999
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating47.2 US tons
Inventory rating28.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length23 ft (7.1 m)
Longest span22 ft (6.7 m)
Deck width14 ft (4.2 m)
Roadway width13 ft (3.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2005)
Projected traffic52 by 2041
Trucks25%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Port Wine Ridge RD over Rock Creek Tributary built?

It was built in 1970, making it 55 years old in 2025.

What condition is Port Wine Ridge RD over Rock Creek Tributary 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 August 2023.

How much traffic does Port Wine Ridge RD over Rock Creek Tributary carry?

About 25 vehicles per day (2005 count), of which roughly 25% are trucks.

How long is Port Wine Ridge RD over Rock Creek Tributary?

The structure is 23 ft (7.1 m) long with a longest span of 22 ft (6.7 m) and a deck 14 ft wide.

Who owns Port Wine Ridge RD over Rock Creek Tributary?

It is owned by the County Highway Agency.