US Bridges

State Route 99 over Cross Drain

Good

Butte County, California · 03-BUT-099-45.87 · Structure no. 12 0030

Built
1915
110 years old, rebuilt 2021
Condition
Good
inspected May 2024
Type
Culvert
Concrete Continuous
Length
44 ft
4 main spans
Daily traffic
11,600
2020 count
Owner
State
State Highway Agency

About this bridge

State Route 99 over Cross Drain is a concrete continuous culvert carrying State Route 99 over Cross Drain in Butte County, California. It was built in 1915 and reconstructed in 2021, so it is 110 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,600 vehicles a day, roughly 9% of them trucks, projected to reach 21,406 by 2041. The structure is 44 ft (13.4 m) long and 46 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesState Route 99
CrossesCross Drain
Location03-BUT-099-45.87
RouteState Highway 99
Coordinates39.88244, -121.97493
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span10 ft (3 m)
Deck width46 ft (14 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,600 (2020)
Projected traffic21,406 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

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 99 over Cross Drain built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 2021.

What condition is State Route 99 over Cross Drain in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does State Route 99 over Cross Drain carry?

About 11,600 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is State Route 99 over Cross Drain?

The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m) and a deck 46 ft wide.

Who owns State Route 99 over Cross Drain?

It is owned by the State Highway Agency.