US Bridges

Chambers Road over Montbello Ditch

Good

Denver County, Colorado · At 46th Avenue · Structure no. D-20-MB-640

Built
1980
45 years old, rebuilt 2000
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
21 ft
3 main spans
Daily traffic
31,946
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Chambers Road over Montbello Ditch is a concrete culvert carrying Chambers Road over Montbello Ditch in Denver County, Colorado. It was built in 1980 and reconstructed in 2000, so it is 45 years old, older than the Colorado average of 42.2 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 31,946 vehicles a day, roughly 2% of them trucks, projected to reach 35,460 by 2041. The structure is 21 ft (6.4 m) long and 159 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesChambers Road
CrossesMontbello Ditch
LocationAt 46th Avenue
RouteCity Street 0
Coordinates39.77667, -104.80997
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating40 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span6 ft (1.8 m)
Deck width159 ft (48.5 m)
Roadway width86 ft (26.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,946 (2021)
Projected traffic35,460 by 2041
Trucks2%
Lanes on structure6
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Chambers Road over Montbello Ditch built?

It was built in 1980, making it 45 years old in 2025. It was reconstructed in 2000.

What condition is Chambers Road over Montbello Ditch 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 December 2024.

How much traffic does Chambers Road over Montbello Ditch carry?

About 31,946 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Chambers Road over Montbello Ditch?

The structure is 21 ft (6.4 m) long with a longest span of 6 ft (1.8 m) and a deck 159 ft wide.

Who owns Chambers Road over Montbello Ditch?

It is owned by the City or Municipal Highway Agency.