US Bridges

Mariposa Avenue over Cripple Creek

Fair

Sacramento County, California · 0.6 MI N Antelope RD · Structure no. 24C0320

Built
1961
64 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete Continuous
Length
54 ft
2 main spans
Daily traffic
1,058
2024 count
Owner
County
County Highway Agency

About this bridge

Mariposa Avenue over Cripple Creek is a concrete continuous slab carrying Mariposa Avenue over Cripple Creek in Sacramento County, California. It was built in 1961, so it is 64 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 1,058 vehicles a day, roughly 1% of them trucks, projected to reach 8,506 by 2045. The structure is 54 ft (16.5 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMariposa Avenue
CrossesCripple Creek
Location0.6 MI N Antelope RD
RouteCounty Highway 0
Coordinates38.71444, -121.28119
Functional classUrban 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span26 ft (7.9 m)
Deck width37 ft (11.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,058 (2024)
Projected traffic8,506 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-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 Mariposa Avenue over Cripple Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is Mariposa Avenue over Cripple Creek 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 March 2023.

How much traffic does Mariposa Avenue over Cripple Creek carry?

About 1,058 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Mariposa Avenue over Cripple Creek?

The structure is 54 ft (16.5 m) long with a longest span of 26 ft (7.9 m) and a deck 37 ft wide.

Who owns Mariposa Avenue over Cripple Creek?

It is owned by the County Highway Agency.