US Bridges

Nicolaus Road WB over Markham Ravine

Good

Placer County, California · 0.25 MI E/O Nelson Lane · Structure no. 19C0199L

Built
1987
38 years old
Condition
Good
inspected April 2023
Type
Arch - Deck
Aluminum, Wrought Iron, or Cast Iron
Length
30 ft
1 main span
Daily traffic
4,603
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nicolaus Road WB over Markham Ravine is a aluminum, wrought iron, or cast iron arch - deck carrying Nicolaus Road WB over Markham Ravine in Placer County, California. It was built in 1987, so it is 38 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 4,603 vehicles a day, roughly 5% of them trucks, projected to reach 1,073 by 2045. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesNicolaus Road WB
CrossesMarkham Ravine
Location0.25 MI E/O Nelson Lane
RouteCity Street 0
Coordinates38.89738, -121.33419
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,603 (2022)
Projected traffic1,073 by 2045
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nicolaus Road WB over Markham Ravine built?

It was built in 1987, making it 38 years old in 2025.

What condition is Nicolaus Road WB over Markham Ravine 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 Nicolaus Road WB over Markham Ravine carry?

About 4,603 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Nicolaus Road WB over Markham Ravine?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m).

Who owns Nicolaus Road WB over Markham Ravine?

It is owned by the City or Municipal Highway Agency.