US Bridges

State Route 4 over Creek & Penstock Pipe

Good

Calaveras County, California · 10-CAL-004-R22.09 · Structure no. 30 0055

Built
2009
16 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
548 ft
4 main spans
Daily traffic
7,900
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 4 over Creek & Penstock Pipe is a prestressed concrete continuous box beam or girders - multiple carrying State Route 4 over Creek & Penstock Pipe in Calaveras County, California. It was built in 2009, so it is 16 years old, younger than the California average of 54.8 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 7,900 vehicles a day, roughly 5% of them trucks, projected to reach 15,127 by 2045. The structure is 548 ft (167 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesState Route 4
CrossesCreek & Penstock Pipe
Location10-CAL-004-R22.09
RouteState Highway 4
Coordinates38.08305, -120.54257
Functional classRural Minor Arterial

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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length548 ft (167 m)
Longest span166 ft (50.5 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,900 (2019)
Projected traffic15,127 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 4 over Creek & Penstock Pipe built?

It was built in 2009, making it 16 years old in 2025.

What condition is State Route 4 over Creek & Penstock Pipe 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 2023.

How much traffic does State Route 4 over Creek & Penstock Pipe carry?

About 7,900 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is State Route 4 over Creek & Penstock Pipe?

The structure is 548 ft (167 m) long with a longest span of 166 ft (50.5 m) and a deck 42 ft wide.

Who owns State Route 4 over Creek & Penstock Pipe?

It is owned by the State Highway Agency.