US Bridges

Union Road over Dry Creek

Fair

San Luis Obispo County, California · Between Branch & Geneseo · Structure no. 49C0428

Built
2000
25 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
801
2006 count
Owner
County
County Highway Agency

About this bridge

Union Road over Dry Creek is a concrete continuous culvert carrying Union Road over Dry Creek in San Luis Obispo County, California. It was built in 2000, so it is 25 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 6 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 801 vehicles a day, roughly 3% of them trucks, projected to reach 1,228 by 2046. The structure is 28 ft (8.6 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesUnion Road
CrossesDry Creek
LocationBetween Branch & Geneseo
RouteCounty Highway 0
Coordinates35.63755, -120.57205
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length28 ft (8.6 m)
Longest span14 ft (4.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic801 (2006)
Projected traffic1,228 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Union Road over Dry Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is Union Road over Dry 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 April 2024.

How much traffic does Union Road over Dry Creek carry?

About 801 vehicles per day (2006 count), of which roughly 3% are trucks.

How long is Union Road over Dry Creek?

The structure is 28 ft (8.6 m) long with a longest span of 14 ft (4.2 m).

Who owns Union Road over Dry Creek?

It is owned by the County Highway Agency.