US Bridges

State Route 169 over Cappell Creek

Good

Humboldt County, California · 01-HUM-169-22.37 · Structure no. 04 0304

Built
2012
13 years old
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
150 ft
3 main spans
Daily traffic
2,000
2012 count
Owner
State
State Highway Agency

About this bridge

State Route 169 over Cappell Creek is a concrete continuous box beam or girders - multiple carrying State Route 169 over Cappell Creek in Humboldt County, California. It was built in 2012, so it is 13 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 2,000 vehicles a day, roughly 20% of them trucks, projected to reach 4,177 by 2042. The structure is 150 ft (45.8 m) long and 43 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesState Route 169
CrossesCappell Creek
Location01-HUM-169-22.37
RouteState Highway 169
Coordinates41.28314, -123.82324
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length150 ft (45.8 m)
Longest span58 ft (17.6 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2012)
Projected traffic4,177 by 2042
Trucks20%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 169 over Cappell Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is State Route 169 over Cappell Creek 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 September 2024.

How much traffic does State Route 169 over Cappell Creek carry?

About 2,000 vehicles per day (2012 count), of which roughly 20% are trucks.

How long is State Route 169 over Cappell Creek?

The structure is 150 ft (45.8 m) long with a longest span of 58 ft (17.6 m) and a deck 43 ft wide.

Who owns State Route 169 over Cappell Creek?

It is owned by the State Highway Agency.