US Bridges

State Route 162 over Campbell Slough

Fair

Glenn County, California · 03-GLE-162-82.01 · Structure no. 11 0024

Built
1916
109 years old, rebuilt 1949
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
240 ft
12 main spans
Daily traffic
1,500
2016 count
Owner
State
State Highway Agency

About this bridge

State Route 162 over Campbell Slough is a steel stringer/multi-beam or girder carrying State Route 162 over Campbell Slough in Glenn County, California. It was built in 1916 and reconstructed in 1949, so it is 109 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 1,500 vehicles a day, roughly 10% of them trucks, projected to reach 2,200 by 2043. The structure is 240 ft (73.2 m) long and 28 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesState Route 162
CrossesCampbell Slough
Location03-GLE-162-82.01
RouteState Highway 162
CountyGlenn County
StateCalifornia
Coordinates39.46393, -121.91832
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans12
Design loadHS 15
Structure length240 ft (73.2 m)
Longest span20 ft (6.1 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2016)
Projected traffic2,200 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 162 over Campbell Slough built?

It was built in 1916, making it 109 years old in 2025. It was reconstructed in 1949.

What condition is State Route 162 over Campbell Slough 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 November 2023.

How much traffic does State Route 162 over Campbell Slough carry?

About 1,500 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is State Route 162 over Campbell Slough?

The structure is 240 ft (73.2 m) long with a longest span of 20 ft (6.1 m) and a deck 28 ft wide.

Who owns State Route 162 over Campbell Slough?

It is owned by the State Highway Agency.