US Bridges

Broad ST over Stenner Creek

Fair

San Luis Obispo County, California · At RTE 101 · Structure no. 49C0290

Built
1909
116 years old, rebuilt 1953
Condition
Fair
inspected March 2023
Type
Arch - Deck
Concrete
Length
56 ft
1 main span
Daily traffic
4,496
2008 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broad ST over Stenner Creek is a concrete arch - deck carrying Broad ST over Stenner Creek in San Luis Obispo County, California. It was built in 1909 and reconstructed in 1953, so it is 116 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 4,496 vehicles a day, roughly 3% of them trucks, projected to reach 4,587 by 2045. The structure is 56 ft (17.1 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesBroad ST
CrossesStenner Creek
LocationAt RTE 101
RouteCity Street 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.28384, -120.66796
Functional classUrban 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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating26.5 US tons
Inventory rating16.1 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length56 ft (17.1 m)
Longest span54 ft (16.5 m)
Deck width22 ft (6.8 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,496 (2008)
Projected traffic4,587 by 2045
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Broad ST over Stenner Creek built?

It was built in 1909, making it 116 years old in 2025. It was reconstructed in 1953.

What condition is Broad ST over Stenner 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 March 2023.

How much traffic does Broad ST over Stenner Creek carry?

About 4,496 vehicles per day (2008 count), of which roughly 3% are trucks.

How long is Broad ST over Stenner Creek?

The structure is 56 ft (17.1 m) long with a longest span of 54 ft (16.5 m) and a deck 22 ft wide.

Who owns Broad ST over Stenner Creek?

It is owned by the City or Municipal Highway Agency.