US Bridges

Milpitas Road over Drainage San Antonio Riv

PoorPosted for load

Monterey County, California · W Bear Canyon Sec 2/5 · Structure no. DAPFORLIG000750

Built
2006
19 years old
Condition
Poor
inspected October 2023
Type
Girder and Floorbeam System
Steel
Length
35 ft
1 main span
Daily traffic
10
2021 count
Owner
Federal
Army

About this bridge

Milpitas Road over Drainage San Antonio Riv is a steel girder and floorbeam system carrying Milpitas Road over Drainage San Antonio Riv in Monterey County, California. It was built in 2006, so it is 19 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for other load-capacity restriction.

It carries about 10 vehicles a day, roughly 5% of them trucks, projected to reach 20 by 2044. The structure is 35 ft (10.7 m) long and 26 ft wide.

CarriesMilpitas Road
CrossesDrainage San Antonio Riv
LocationW Bear Canyon Sec 2/5
Coordinates36.06828, -121.3268
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating46.4 US tons

Structure

MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span35 ft (10.7 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2021)
Projected traffic20 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Milpitas Road over Drainage San Antonio Riv built?

It was built in 2006, making it 19 years old in 2025.

What condition is Milpitas Road over Drainage San Antonio Riv in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does Milpitas Road over Drainage San Antonio Riv carry?

About 10 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Milpitas Road over Drainage San Antonio Riv?

The structure is 35 ft (10.7 m) long with a longest span of 35 ft (10.7 m) and a deck 26 ft wide.

Who owns Milpitas Road over Drainage San Antonio Riv?

It is owned by the Army.