US Bridges

State Route 1 SB over N1-MUNRAS Ave Off Ramp

Good

Monterey County, California · 05-MON-001-R75.74-MON · Structure no. 44 0145L

Built
1968
57 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
126 ft
1 main span
Daily traffic
28,000
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 1 SB over N1-MUNRAS Ave Off Ramp is a prestressed concrete box beam or girders - multiple carrying State Route 1 SB over N1-MUNRAS Ave Off Ramp in Monterey County, California. It was built in 1968, so it is 57 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 28,000 vehicles a day, roughly 3% of them trucks, projected to reach 35,107 by 2043. The structure is 126 ft (38.4 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesState Route 1 SB
CrossesN1-MUNRAS Ave Off Ramp
Location05-MON-001-R75.74-MON
RouteState Highway 1
Coordinates36.58057, -121.90366
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating44.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length126 ft (38.4 m)
Longest span122 ft (37.2 m)
Deck width39 ft (11.9 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,000 (2009)
Projected traffic35,107 by 2043
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 1 SB over N1-MUNRAS Ave Off Ramp built?

It was built in 1968, making it 57 years old in 2025.

What condition is State Route 1 SB over N1-MUNRAS Ave Off Ramp 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 July 2023.

How much traffic does State Route 1 SB over N1-MUNRAS Ave Off Ramp carry?

About 28,000 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is State Route 1 SB over N1-MUNRAS Ave Off Ramp?

The structure is 126 ft (38.4 m) long with a longest span of 122 ft (37.2 m) and a deck 39 ft wide.

Who owns State Route 1 SB over N1-MUNRAS Ave Off Ramp?

It is owned by the State Highway Agency.