US Bridges

State Route 174 over Bear River

Fair

Placer County, California · 03-PLA-174-2.82 · Structure no. 19 0065

Built
1987
38 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
393 ft
4 main spans
Daily traffic
4,950
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 174 over Bear River is a prestressed concrete continuous box beam or girders - multiple carrying State Route 174 over Bear River in Placer County, California. It was built in 1987, so it is 38 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 4,950 vehicles a day, roughly 8% of them trucks, projected to reach 7,934 by 2045. The structure is 393 ft (119.8 m) long and 36 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesState Route 174
CrossesBear River
Location03-PLA-174-2.82
RouteState Highway 174
Coordinates39.13063, -120.95886
Functional classRural Minor 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 inspectionOctober 2023
Inspection intervalevery 24 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length393 ft (119.8 m)
Longest span111 ft (33.8 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,950 (2009)
Projected traffic7,934 by 2045
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 174 over Bear River built?

It was built in 1987, making it 38 years old in 2025.

What condition is State Route 174 over Bear River 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 October 2023.

How much traffic does State Route 174 over Bear River carry?

About 4,950 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is State Route 174 over Bear River?

The structure is 393 ft (119.8 m) long with a longest span of 111 ft (33.8 m) and a deck 36 ft wide.

Who owns State Route 174 over Bear River?

It is owned by the State Highway Agency.