US Bridges

Route 271 over Mc Coy Creek

Good

Mendocino County, California · 01-MEN-271-17.86 · Structure no. 10 0308

Built
2019
6 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
231 ft
2 main spans
Daily traffic
150
2018 count
Owner
State
State Highway Agency

About this bridge

Route 271 over Mc Coy Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Route 271 over Mc Coy Creek in Mendocino County, California. It was built in 2019, so it is 6 years old, younger 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 150 vehicles a day, roughly 12% of them trucks, projected to reach 200 by 2041. The structure is 231 ft (70.4 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 271
CrossesMc Coy Creek
Location01-MEN-271-17.86
RouteState Highway 271
Coordinates39.95353, -123.7758
Functional classRural Minor Collector

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length231 ft (70.4 m)
Longest span111 ft (33.9 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2018)
Projected traffic200 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Route 271 over Mc Coy Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is Route 271 over Mc Coy 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 April 2024.

How much traffic does Route 271 over Mc Coy Creek carry?

About 150 vehicles per day (2018 count), of which roughly 12% are trucks.

How long is Route 271 over Mc Coy Creek?

The structure is 231 ft (70.4 m) long with a longest span of 111 ft (33.9 m) and a deck 35 ft wide.

Who owns Route 271 over Mc Coy Creek?

It is owned by the State Highway Agency.