US Bridges

State Route 99 NB over Butte Creek

Fair

Butte County, California · 03-BUT-099-28.72 · Structure no. 12 0126R

Built
2014
11 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
326 ft
2 main spans
Daily traffic
14,125
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 99 NB over Butte Creek is a prestressed concrete continuous box beam or girders - multiple carrying State Route 99 NB over Butte Creek in Butte County, California. It was built in 2014, so it is 11 years old, younger 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 14,125 vehicles a day, projected to reach 26,808 by 2045. The structure is 326 ft (99.4 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesState Route 99 NB
CrossesButte Creek
Location03-BUT-099-28.72
RouteState Highway 99
CountyButte County
StateCalifornia
Coordinates39.69417, -121.77771
Functional classUrban Other Principal 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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length326 ft (99.4 m)
Longest span161 ft (49 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,125 (2009)
Projected traffic26,808 by 2045
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 NB over Butte Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is State Route 99 NB over Butte Creek 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 2023.

How much traffic does State Route 99 NB over Butte Creek carry?

About 14,125 vehicles per day (2009 count).

How long is State Route 99 NB over Butte Creek?

The structure is 326 ft (99.4 m) long with a longest span of 161 ft (49 m) and a deck 42 ft wide.

Who owns State Route 99 NB over Butte Creek?

It is owned by the State Highway Agency.