US Bridges

Garden DR over State Route 70

Fair

Butte County, California · 03-BUT-070-16.63 · Structure no. 12 0166

Built
1963
62 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
181 ft
4 main spans
Daily traffic
2,000
2020 count
Owner
State
State Highway Agency

About this bridge

Garden DR over State Route 70 is a concrete continuous tee beam carrying Garden DR over State Route 70 in Butte County, California. It was built in 1963, so it is 62 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 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 2,000 vehicles a day, roughly 1% of them trucks, projected to reach 6,608 by 2041. The structure is 181 ft (55.2 m) long and 40 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesGarden DR
CrossesState Route 70
Location03-BUT-070-16.63
RouteCounty Highway 0
Coordinates39.53481, -121.5829
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.
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 alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length181 ft (55.2 m)
Longest span56 ft (17.1 m)
Deck width40 ft (12.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2020)
Projected traffic6,608 by 2041
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed19.9 mi (32 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 Garden DR over State Route 70 built?

It was built in 1963, making it 62 years old in 2025.

What condition is Garden DR over State Route 70 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 Garden DR over State Route 70 carry?

About 2,000 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Garden DR over State Route 70?

The structure is 181 ft (55.2 m) long with a longest span of 56 ft (17.1 m) and a deck 40 ft wide.

Who owns Garden DR over State Route 70?

It is owned by the State Highway Agency.