US Bridges

Colorado Ave over Appian Way / Promenade

PoorPosted for load

Los Angeles County, California · 0.6MI W/O Lincoln Blvd · Structure no. 53C1900

Built
1939
86 years old
Condition
Poor
inspected March 2024
Type
Slab
Concrete
Length
487 ft
17 main spans
Daily traffic
727
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Colorado Ave over Appian Way / Promenade is a concrete slab carrying Colorado Ave over Appian Way / Promenade in Los Angeles County, California. It was built in 1939, so it is 86 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. Its operating status is: posted for load restriction.

It carries about 727 vehicles a day, roughly 1% of them trucks, projected to reach 800 by 2043. The structure is 487 ft (148.5 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesColorado Ave
CrossesAppian Way / Promenade
Location0.6MI W/O Lincoln Blvd
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates34.01017, -118.49638
Functional classUrban Local

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.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating27.1 US tons
Inventory rating16.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans17
Design loadH 15
Structure length487 ft (148.5 m)
Longest span36 ft (11 m)
Deck width34 ft (10.5 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic727 (2014)
Projected traffic800 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed123.7 mi (199 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$6 million (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Colorado Ave over Appian Way / Promenade built?

It was built in 1939, making it 86 years old in 2025.

What condition is Colorado Ave over Appian Way / Promenade 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 March 2024.

How much traffic does Colorado Ave over Appian Way / Promenade carry?

About 727 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Colorado Ave over Appian Way / Promenade?

The structure is 487 ft (148.5 m) long with a longest span of 36 ft (11 m) and a deck 34 ft wide.

Who owns Colorado Ave over Appian Way / Promenade?

It is owned by the City or Municipal Highway Agency.