US Bridges

Sanborn RD over UP RR & AMTRAK

Poor

Monterey County, California · 0.3 MI N Abbot ST · Structure no. 44C0039R

Built
1967
58 years old
Condition
Poor
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
849 ft
3 main spans
Daily traffic
28,392
2005 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sanborn RD over UP RR & AMTRAK is a prestressed concrete continuous stringer/multi-beam or girder carrying Sanborn RD over UP RR & AMTRAK in Monterey County, California. It was built in 1967, so it is 58 years old, older 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 4 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.

It carries about 28,392 vehicles a day, roughly 10% of them trucks, projected to reach 33,415 by 2040. The structure is 849 ft (258.9 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSanborn RD
CrossesUP RR & AMTRAK
Location0.3 MI N Abbot ST
RouteCity Street 0
CountyMonterey County
StateCalifornia
Coordinates36.65954, -121.63415
Functional classUrban Other Principal Arterial

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+17 approach)
Design loadUnknown
Structure length849 ft (258.9 m)
Longest span59 ft (18.1 m)
Deck width32 ft (9.8 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,392 (2005)
Projected traffic33,415 by 2040
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4 million (2017 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sanborn RD over UP RR & AMTRAK built?

It was built in 1967, making it 58 years old in 2025.

What condition is Sanborn RD over UP RR & AMTRAK 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 August 2023.

How much traffic does Sanborn RD over UP RR & AMTRAK carry?

About 28,392 vehicles per day (2005 count), of which roughly 10% are trucks.

How long is Sanborn RD over UP RR & AMTRAK?

The structure is 849 ft (258.9 m) long with a longest span of 59 ft (18.1 m) and a deck 32 ft wide.

Who owns Sanborn RD over UP RR & AMTRAK?

It is owned by the City or Municipal Highway Agency.