US Bridges

Greenbay Road over Interstate 5

Fair

Colusa County, California · 03-COL-005-R3.15 · Structure no. 15 0060

Built
1967
58 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
222 ft
2 main spans
Daily traffic
200
2017 count
Owner
State
State Highway Agency

About this bridge

Greenbay Road over Interstate 5 is a concrete continuous box beam or girders - multiple carrying Greenbay Road over Interstate 5 in Colusa County, California. It was built in 1967, so it is 58 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 200 vehicles a day, roughly 15% of them trucks, projected to reach 303 by 2044. The structure is 222 ft (67.7 m) long and 34 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesGreenbay Road
CrossesInterstate 5
Location03-COL-005-R3.15
RouteCounty Highway 0
CountyColusa County
StateCalifornia
Coordinates38.96587, -122.02619
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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating39.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length222 ft (67.7 m)
Longest span110 ft (33.5 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2017)
Projected traffic303 by 2044
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 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 Greenbay Road over Interstate 5 built?

It was built in 1967, making it 58 years old in 2025.

What condition is Greenbay Road 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 January 2024.

How much traffic does Greenbay Road over Interstate 5 carry?

About 200 vehicles per day (2017 count), of which roughly 15% are trucks.

How long is Greenbay Road over Interstate 5?

The structure is 222 ft (67.7 m) long with a longest span of 110 ft (33.5 m) and a deck 34 ft wide.

Who owns Greenbay Road over Interstate 5?

It is owned by the State Highway Agency.