US Bridges

County Road 28 over Interstate 5

Fair

Glenn County, California · 03-GLE-005-R19.81 · Structure no. 11 0076

Built
1966
59 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
194 ft
4 main spans
Daily traffic
1,000
2014 count
Owner
State
State Highway Agency

About this bridge

County Road 28 over Interstate 5 is a concrete continuous tee beam carrying County Road 28 over Interstate 5 in Glenn County, California. It was built in 1966, so it is 59 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 1,000 vehicles a day, roughly 20% of them trucks, projected to reach 1,300 by 2045. The structure is 194 ft (59.1 m) long and 34 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCounty Road 28
CrossesInterstate 5
Location03-GLE-005-R19.81
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.66783, -122.20491
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length194 ft (59.1 m)
Longest span67 ft (20.3 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2014)
Projected traffic1,300 by 2045
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 County Road 28 over Interstate 5 built?

It was built in 1966, making it 59 years old in 2025.

What condition is County Road 28 over Interstate 5 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 May 2024.

How much traffic does County Road 28 over Interstate 5 carry?

About 1,000 vehicles per day (2014 count), of which roughly 20% are trucks.

How long is County Road 28 over Interstate 5?

The structure is 194 ft (59.1 m) long with a longest span of 67 ft (20.3 m) and a deck 34 ft wide.

Who owns County Road 28 over Interstate 5?

It is owned by the State Highway Agency.