US Bridges

Broad ST over Acacia Creek

Fair

San Luis Obispo County, California · N of Capitolio Way · Structure no. 49C0446

Built
1968
57 years old, rebuilt 1978
Condition
Fair
inspected May 2023
Type
Culvert
Concrete Continuous
Length
32 ft
2 main spans
Daily traffic
22,100
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broad ST over Acacia Creek is a concrete continuous culvert carrying Broad ST over Acacia Creek in San Luis Obispo County, California. It was built in 1968 and reconstructed in 1978, so it is 57 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 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 22,100 vehicles a day, roughly 5% of them trucks, projected to reach 32,901 by 2045. The structure is 32 ft (9.8 m) long and 100 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesBroad ST
CrossesAcacia Creek
LocationN of Capitolio Way
RouteCity Street 0
CountySan Luis Obispo County
StateCalifornia
Coordinates35.25732, -120.6473
Functional classUrban Other Principal 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum 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 length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width100 ft (30.6 m)
Roadway width77 ft (23.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,100 (2005)
Projected traffic32,901 by 2045
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Broad ST over Acacia Creek built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1978.

What condition is Broad ST over Acacia 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 May 2023.

How much traffic does Broad ST over Acacia Creek carry?

About 22,100 vehicles per day (2005 count), of which roughly 5% are trucks.

How long is Broad ST over Acacia Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 100 ft wide.

Who owns Broad ST over Acacia Creek?

It is owned by the City or Municipal Highway Agency.