US Bridges

Broad ST over Deer Creek

Poor

Nevada County, California · Btwn SR20 & Sacramento ST · Structure no. 17C0041

Built
1967
58 years old
Condition
Poor
inspected August 2023
Type
Slab
Concrete Continuous
Length
58 ft
2 main spans
Daily traffic
8,630
2007 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broad ST over Deer Creek is a concrete continuous slab carrying Broad ST over Deer Creek in Nevada County, California. It was built in 1967, so it is 58 years old, older 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 8,630 vehicles a day, roughly 2% of them trucks, projected to reach 7,761 by 2041. The structure is 58 ft (17.7 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBroad ST
CrossesDeer Creek
LocationBtwn SR20 & Sacramento ST
RouteCity Street 0
Coordinates39.26203, -121.01646
Functional classUrban Minor Arterial

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating33.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span29 ft (8.8 m)
Deck width58 ft (17.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,630 (2007)
Projected traffic7,761 by 2041
Trucks2%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$525,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Broad ST over Deer Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is Broad ST over Deer 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 August 2023.

How much traffic does Broad ST over Deer Creek carry?

About 8,630 vehicles per day (2007 count), of which roughly 2% are trucks.

How long is Broad ST over Deer Creek?

The structure is 58 ft (17.7 m) long with a longest span of 29 ft (8.8 m) and a deck 58 ft wide.

Who owns Broad ST over Deer Creek?

It is owned by the City or Municipal Highway Agency.