US Bridges

County Road 86 over Rush Creek

Good

Modoc County, California · East of State Route 299 · Structure no. 03C0131

Built
2019
6 years old
Condition
Good
inspected April 2023
Type
Slab
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
100
2021 count
Owner
County
County Highway Agency

About this bridge

County Road 86 over Rush Creek is a prestressed concrete slab carrying County Road 86 over Rush Creek in Modoc County, California. It was built in 2019, so it is 6 years old, younger 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 133 by 2045. The structure is 72 ft (21.9 m) long and 25 ft wide. If it were closed, the detour would be 61.5 mi (99 km).

CarriesCounty Road 86
CrossesRush Creek
LocationEast of State Route 299
RouteCounty Highway 0
Coordinates41.23752, -120.90436
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadGreater than HL 93
Structure length72 ft (21.9 m)
Longest span67 ft (20.5 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2021)
Projected traffic133 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed61.5 mi (99 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 86 over Rush Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is County Road 86 over Rush Creek 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 April 2023.

How much traffic does County Road 86 over Rush Creek carry?

About 100 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is County Road 86 over Rush Creek?

The structure is 72 ft (21.9 m) long with a longest span of 67 ft (20.5 m) and a deck 25 ft wide.

Who owns County Road 86 over Rush Creek?

It is owned by the County Highway Agency.