US Bridges

HWY 49 over Knickerbocker Creek

Fair

El Dorado County, California · 03-ED-049-33.82 · Structure no. 25 0123

Built
1989
36 years old, rebuilt 2014
Condition
Fair
inspected September 2024
Type
Arch - Deck
Concrete
Length
26 ft
1 main span
Daily traffic
3,500
2012 count
Owner
State
State Highway Agency

About this bridge

HWY 49 over Knickerbocker Creek is a concrete arch - deck carrying HWY 49 over Knickerbocker Creek in El Dorado County, California. It was built in 1989 and reconstructed in 2014, so it is 36 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,500 vehicles a day, roughly 14% of them trucks, projected to reach 6,141 by 2044. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 24.9 mi (40 km).

CarriesHWY 49
CrossesKnickerbocker Creek
Location03-ED-049-33.82
RouteState Highway 49
Coordinates38.87796, -121.01798
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2012)
Projected traffic6,141 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 HWY 49 over Knickerbocker Creek built?

It was built in 1989, making it 36 years old in 2025. It was reconstructed in 2014.

What condition is HWY 49 over Knickerbocker Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does HWY 49 over Knickerbocker Creek carry?

About 3,500 vehicles per day (2012 count), of which roughly 14% are trucks.

How long is HWY 49 over Knickerbocker Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m).

Who owns HWY 49 over Knickerbocker Creek?

It is owned by the State Highway Agency.