US Bridges

State Route 169 over Miners Creek

Fair

Humboldt County, California · 01-HUM-169-26.97 · Structure no. 04 0299

Built
1995
30 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
235 ft
3 main spans
Daily traffic
320
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 169 over Miners Creek is a concrete continuous box beam or girders - multiple carrying State Route 169 over Miners Creek in Humboldt County, California. It was built in 1995, so it is 30 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 320 vehicles a day, projected to reach 4,261 by 2046. The structure is 235 ft (71.6 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesState Route 169
CrossesMiners Creek
Location01-HUM-169-26.97
RouteState Highway 169
CountyHumboldt County
StateCalifornia
Coordinates41.24832, -123.77234
Functional classRural Major 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length235 ft (71.6 m)
Longest span94 ft (28.7 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2009)
Projected traffic4,261 by 2046
Trucks0%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 169 over Miners Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is State Route 169 over Miners 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 September 2024.

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

About 320 vehicles per day (2009 count).

How long is State Route 169 over Miners Creek?

The structure is 235 ft (71.6 m) long with a longest span of 94 ft (28.7 m) and a deck 35 ft wide.

Who owns State Route 169 over Miners Creek?

It is owned by the State Highway Agency.