US Bridges

SR 183 NB Main SB over US 101 N MAIN-N101 Onrp

Good

Monterey County, California · 05-MON-183-0.01-SAL · Structure no. 44 0099S

Built
1965
60 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
518 ft
6 main spans
Daily traffic
19,992
2008 count
Owner
State
State Highway Agency

About this bridge

SR 183 NB Main SB over US 101 N MAIN-N101 Onrp is a concrete continuous box beam or girders - multiple carrying SR 183 NB Main SB over US 101 N MAIN-N101 Onrp in Monterey County, California. It was built in 1965, so it is 60 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 19,992 vehicles a day, roughly 9% of them trucks, projected to reach 25,678 by 2044. The structure is 518 ft (157.9 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 183 NB Main SB
CrossesUS 101 N MAIN-N101 Onrp
Location05-MON-183-0.01-SAL
RouteState Highway 183
CountyMonterey County
StateCalifornia
Coordinates36.68696, -121.65311
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length518 ft (157.9 m)
Longest span97 ft (29.7 m)
Deck width37 ft (11.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,992 (2008)
Projected traffic25,678 by 2044
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
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 SR 183 NB Main SB over US 101 N MAIN-N101 Onrp built?

It was built in 1965, making it 60 years old in 2025.

What condition is SR 183 NB Main SB over US 101 N MAIN-N101 Onrp 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 June 2024.

How much traffic does SR 183 NB Main SB over US 101 N MAIN-N101 Onrp carry?

About 19,992 vehicles per day (2008 count), of which roughly 9% are trucks.

How long is SR 183 NB Main SB over US 101 N MAIN-N101 Onrp?

The structure is 518 ft (157.9 m) long with a longest span of 97 ft (29.7 m) and a deck 37 ft wide.

Who owns SR 183 NB Main SB over US 101 N MAIN-N101 Onrp?

It is owned by the State Highway Agency.