US Bridges

Pamo Road over Santa Ysabel Creek

Fair

San Diego County, California · 3.85 MI N/O Haverford Rd. · Structure no. 57C0729

Built
1920
105 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
61 ft
10 main spans
Daily traffic
114
2019 count
Owner
County
County Highway Agency

About this bridge

Pamo Road over Santa Ysabel Creek is a concrete continuous culvert carrying Pamo Road over Santa Ysabel Creek in San Diego County, California. It was built in 1920, so it is 105 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 114 vehicles a day, roughly 1% of them trucks, projected to reach 250 by 2041. The structure is 61 ft (18.6 m) long and 14 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesPamo Road
CrossesSanta Ysabel Creek
Location3.85 MI N/O Haverford Rd.
RouteCounty Highway 0
CountySan Diego County
StateCalifornia
Coordinates33.119, -116.84962
Functional classRural Local

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 protection9 ExcellentNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadUnknown
Structure length61 ft (18.6 m)
Longest span4 ft (1.2 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic114 (2019)
Projected traffic250 by 2041
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 Pamo Road over Santa Ysabel Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is Pamo Road over Santa Ysabel 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 August 2023.

How much traffic does Pamo Road over Santa Ysabel Creek carry?

About 114 vehicles per day (2019 count), of which roughly 1% are trucks.

How long is Pamo Road over Santa Ysabel Creek?

The structure is 61 ft (18.6 m) long with a longest span of 4 ft (1.2 m) and a deck 14 ft wide.

Who owns Pamo Road over Santa Ysabel Creek?

It is owned by the County Highway Agency.