US Bridges

Road 7-30 over Little Truckee River

Good

Sierra County, California · S27 T19N R14E · Structure no. 051756000001026

Built
1998
27 years old
Condition
Good
inspected September 2022
Type
Tee Beam
Prestressed Concrete Continuous
Length
75 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Road 7-30 over Little Truckee River is a prestressed concrete continuous tee beam carrying Road 7-30 over Little Truckee River in Sierra County, California. It was built in 1998, so it is 27 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 75 ft (22.9 m) long and 14 ft wide.

CarriesRoad 7-30
CrossesLittle Truckee River
LocationS27 T19N R14E
RouteFederal Lands Road 7-
Coordinates39.48306, -120.38324
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating45.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans1
Design loadHS 25 or greater
Structure length75 ft (22.9 m)
Longest span75 ft (22.9 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road 7-30 over Little Truckee River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Road 7-30 over Little Truckee River 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 September 2022.

How much traffic does Road 7-30 over Little Truckee River carry?

About 50 vehicles per day (latest count).

How long is Road 7-30 over Little Truckee River?

The structure is 75 ft (22.9 m) long with a longest span of 75 ft (22.9 m) and a deck 14 ft wide.

Who owns Road 7-30 over Little Truckee River?

It is owned by the U.S. Forest Service.