US Bridges

Nicolaus Road over Markham Ravine

Good

Placer County, California · 0.25 MI E/O Nelson Road · Structure no. 19C0199R

Built
2009
16 years old
Condition
Good
inspected April 2021
Type
Slab
Concrete
Length
48 ft
1 main span
Daily traffic
700
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nicolaus Road over Markham Ravine is a concrete slab carrying Nicolaus Road over Markham Ravine in Placer County, California. It was built in 2009, so it is 16 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 700 vehicles a day, roughly 8% of them trucks, projected to reach 1,048 by 2038. The structure is 48 ft (14.6 m) long and 40 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNicolaus Road
CrossesMarkham Ravine
Location0.25 MI E/O Nelson Road
RouteCity Street 0
CountyPlacer County
StateCalifornia
Coordinates38.89719, -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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length48 ft (14.6 m)
Longest span46 ft (14 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2014)
Projected traffic1,048 by 2038
Trucks8%
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 over Markham Ravine built?

It was built in 2009, making it 16 years old in 2025.

What condition is Nicolaus Road 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 2021.

How much traffic does Nicolaus Road over Markham Ravine carry?

About 700 vehicles per day (2014 count), of which roughly 8% are trucks.

How long is Nicolaus Road over Markham Ravine?

The structure is 48 ft (14.6 m) long with a longest span of 46 ft (14 m) and a deck 40 ft wide.

Who owns Nicolaus Road over Markham Ravine?

It is owned by the City or Municipal Highway Agency.