US Bridges

Clipper Drive over Frisk Creek

Fair

Contra Costa County, California · 0.1 MI East of Newport DR · Structure no. 28C0250

Built
1987
38 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
57 ft
3 main spans
Daily traffic
1,500
2013 count
Owner
County
County Highway Agency

About this bridge

Clipper Drive over Frisk Creek is a concrete continuous slab carrying Clipper Drive over Frisk Creek in Contra Costa County, California. It was built in 1987, so it is 38 years old, younger 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 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 1,500 vehicles a day, roughly 20% of them trucks, projected to reach 3,240 by 2046. The structure is 57 ft (17.5 m) long and 66 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesClipper Drive
CrossesFrisk Creek
Location0.1 MI East of Newport DR
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates37.89051, -121.6144
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length57 ft (17.5 m)
Longest span22 ft (6.7 m)
Deck width66 ft (20 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2013)
Projected traffic3,240 by 2046
Trucks20%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Clipper Drive over Frisk Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Clipper Drive over Frisk 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 July 2024.

How much traffic does Clipper Drive over Frisk Creek carry?

About 1,500 vehicles per day (2013 count), of which roughly 20% are trucks.

How long is Clipper Drive over Frisk Creek?

The structure is 57 ft (17.5 m) long with a longest span of 22 ft (6.7 m) and a deck 66 ft wide.

Who owns Clipper Drive over Frisk Creek?

It is owned by the County Highway Agency.