US Bridges

Hutton Road over Nipomo Creek

Fair

San Luis Obispo County, California · 0.55 MI N Cuyama Lane · Structure no. 49C0404

Built
1957
68 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
6,688
2014 count
Owner
County
County Highway Agency

About this bridge

Hutton Road over Nipomo Creek is a concrete continuous tee beam carrying Hutton Road over Nipomo Creek in San Luis Obispo County, California. It was built in 1957, so it is 68 years old, older 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 6,688 vehicles a day, roughly 5% of them trucks, projected to reach 7,485 by 2044. The structure is 102 ft (31.1 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesHutton Road
CrossesNipomo Creek
Location0.55 MI N Cuyama Lane
RouteCounty Highway 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.00294, -120.43947
Functional classUrban 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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,688 (2014)
Projected traffic7,485 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hutton Road over Nipomo Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Hutton Road over Nipomo 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 September 2024.

How much traffic does Hutton Road over Nipomo Creek carry?

About 6,688 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Hutton Road over Nipomo Creek?

The structure is 102 ft (31.1 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns Hutton Road over Nipomo Creek?

It is owned by the County Highway Agency.