US Bridges

N State ST over York Creek

Poor

Mendocino County, California · 2.3 MI N of 101 · Structure no. 10C0067

Built
1980
45 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
93 ft
1 main span
Daily traffic
7,012
2011 count
Owner
County
County Highway Agency

About this bridge

N State ST over York Creek is a prestressed concrete stringer/multi-beam or girder carrying N State ST over York Creek in Mendocino County, California. It was built in 1980, so it is 45 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 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 7,012 vehicles a day, roughly 5% of them trucks, projected to reach 7,787 by 2042. The structure is 93 ft (28.2 m) long and 56 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesN State ST
CrossesYork Creek
Location2.3 MI N of 101
RouteCounty Highway 0
Coordinates39.20236, -123.20377
Functional classRural Major Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating21.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length93 ft (28.2 m)
Longest span90 ft (27.4 m)
Deck width56 ft (17 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,012 (2011)
Projected traffic7,787 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$808,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was N State ST over York Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is N State ST over York Creek 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 February 2024.

How much traffic does N State ST over York Creek carry?

About 7,012 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is N State ST over York Creek?

The structure is 93 ft (28.2 m) long with a longest span of 90 ft (27.4 m) and a deck 56 ft wide.

Who owns N State ST over York Creek?

It is owned by the County Highway Agency.