US Bridges

State Route 1 over Big Creek

Good

Monterey County, California · 05-MON-001-28.09 · Structure no. 44 0056

Built
1938
87 years old
Condition
Good
inspected February 2025
Type
Arch - Deck
Concrete Continuous
Length
587 ft
4 main spans
Daily traffic
2,000
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 over Big Creek is a concrete continuous arch - deck carrying State Route 1 over Big Creek in Monterey County, California. It was built in 1938, so it is 87 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,000 vehicles a day, projected to reach 2,756 by 2043. The structure is 587 ft (178.9 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesState Route 1
CrossesBig Creek
Location05-MON-001-28.09
RouteState Highway 1
Coordinates36.06981, -121.59909
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38.6 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length587 ft (178.9 m)
Longest span168 ft (51.1 m)
Deck width28 ft (8.4 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2009)
Projected traffic2,756 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 1 over Big Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is State Route 1 over Big Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2025.

How much traffic does State Route 1 over Big Creek carry?

About 2,000 vehicles per day (2009 count).

How long is State Route 1 over Big Creek?

The structure is 587 ft (178.9 m) long with a longest span of 168 ft (51.1 m) and a deck 28 ft wide.

Who owns State Route 1 over Big Creek?

It is owned by the State Highway Agency.