US Bridges

State Route 84 over LA Honda Creek

Fair

San Mateo County, California · 04-SM-084-9.67 · Structure no. 35 0169

Built
1954
71 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete Continuous
Length
31 ft
2 main spans
Daily traffic
2,900
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 84 over LA Honda Creek is a concrete continuous culvert carrying State Route 84 over LA Honda Creek in San Mateo County, California. It was built in 1954, so it is 71 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 2,900 vehicles a day, roughly 2% of them trucks, projected to reach 4,325 by 2046. The structure is 31 ft (9.3 m) long. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesState Route 84
CrossesLA Honda Creek
Location04-SM-084-9.67
RouteState Highway 84
CountySan Mateo County
StateCalifornia
Coordinates37.32875, -122.27075
Functional classRural Major 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 inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadUnknown
Structure length31 ft (9.3 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 traffic2,900 (2009)
Projected traffic4,325 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 84 over LA Honda Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is State Route 84 over LA Honda 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 2024.

How much traffic does State Route 84 over LA Honda Creek carry?

About 2,900 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is State Route 84 over LA Honda Creek?

The structure is 31 ft (9.3 m) long with a longest span of 14 ft (4.2 m).

Who owns State Route 84 over LA Honda Creek?

It is owned by the State Highway Agency.