US Bridges

US Highway 101 over Railroad Tracks

Good

Mendocino County, California · 01-MEN-101-47.83 · Structure no. 10 0171

Built
2016
9 years old
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
125 ft
1 main span
Daily traffic
18,000
2017 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 over Railroad Tracks is a prestressed concrete box beam or girders - multiple carrying US Highway 101 over Railroad Tracks in Mendocino County, California. It was built in 2016, so it is 9 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 18,000 vehicles a day, roughly 5% of them trucks, projected to reach 24,566 by 2041. The structure is 125 ft (38 m) long and 54 ft wide. If it were closed, the detour would be 9.3 mi (15 km).

CarriesUS Highway 101
CrossesRailroad Tracks
Location01-MEN-101-47.83
RouteU.S. Route 101
Coordinates39.42408, -123.35035
Functional classUrban Other Principal 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.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating44.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length125 ft (38 m)
Longest span121 ft (36.8 m)
Deck width54 ft (16.6 m)
Roadway width51 ft (15.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,000 (2017)
Projected traffic24,566 by 2041
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.3 mi (15 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 US Highway 101 over Railroad Tracks built?

It was built in 2016, making it 9 years old in 2025.

What condition is US Highway 101 over Railroad Tracks 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 2023.

How much traffic does US Highway 101 over Railroad Tracks carry?

About 18,000 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is US Highway 101 over Railroad Tracks?

The structure is 125 ft (38 m) long with a longest span of 121 ft (36.8 m) and a deck 54 ft wide.

Who owns US Highway 101 over Railroad Tracks?

It is owned by the State Highway Agency.