US Bridges

River Road over Huer Huero Creek

Poor

San Luis Obispo County, California · 1.5 MI S Wellona Ave · Structure no. 49C0052

Built
1950
75 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
97 ft
5 main spans
Daily traffic
1,198
2024 count
Owner
County
County Highway Agency

About this bridge

River Road over Huer Huero Creek is a wood or timber stringer/multi-beam or girder carrying River Road over Huer Huero Creek in San Luis Obispo County, California. It was built in 1950, so it is 75 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 1,198 vehicles a day, roughly 5% of them trucks, projected to reach 1,780 by 2044. The structure is 97 ft (29.6 m) long and 22 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

CarriesRiver Road
CrossesHuer Huero Creek
Location1.5 MI S Wellona Ave
RouteCounty Highway 0
Coordinates35.67534, -120.68646
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length97 ft (29.6 m)
Longest span19 ft (5.8 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,198 (2024)
Projected traffic1,780 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$765,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was River Road over Huer Huero Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is River Road over Huer Huero Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does River Road over Huer Huero Creek carry?

About 1,198 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is River Road over Huer Huero Creek?

The structure is 97 ft (29.6 m) long with a longest span of 19 ft (5.8 m) and a deck 22 ft wide.

Who owns River Road over Huer Huero Creek?

It is owned by the County Highway Agency.