US Bridges

Crystal Springs RD over San Mateo Creek

Fair

San Mateo County, California · 0.24 MI W of SH 82 · Structure no. 35C0042

Built
1901
124 years old
Condition
Fair
inspected May 2023
Type
Arch - Deck
Concrete
Length
41 ft
1 main span
Daily traffic
3,630
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Crystal Springs RD over San Mateo Creek is a concrete arch - deck carrying Crystal Springs RD over San Mateo Creek in San Mateo County, California. It was built in 1901, so it is 124 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 3,630 vehicles a day, roughly 3% of them trucks, projected to reach 7,633 by 2041. The structure is 41 ft (12.5 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCrystal Springs RD
CrossesSan Mateo Creek
Location0.24 MI W of SH 82
RouteCity Street 0
CountySan Mateo County
StateCalifornia
Coordinates37.56151, -122.32984
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating27.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span41 ft (12.5 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,630 (2018)
Projected traffic7,633 by 2041
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 statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Crystal Springs RD over San Mateo Creek built?

It was built in 1901, making it 124 years old in 2025.

What condition is Crystal Springs RD over San Mateo 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 Crystal Springs RD over San Mateo Creek carry?

About 3,630 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is Crystal Springs RD over San Mateo Creek?

The structure is 41 ft (12.5 m) long with a longest span of 41 ft (12.5 m) and a deck 26 ft wide.

Who owns Crystal Springs RD over San Mateo Creek?

It is owned by the City or Municipal Highway Agency.