US Bridges

County Road 73 over Cub Creek

Good

Jefferson County, Colorado · Just SE of Spillway · Structure no. B-18-15A

Built
2000
25 years old
Condition
Good
inspected March 2025
Type
Frame
Concrete
Length
22 ft
1 main span
Daily traffic
15,760
2021 count
Owner
County
County Highway Agency

About this bridge

County Road 73 over Cub Creek is a concrete frame carrying County Road 73 over Cub Creek in Jefferson County, Colorado. It was built in 2000, so it is 25 years old, younger 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 15,760 vehicles a day, roughly 6% of them trucks, projected to reach 18,124 by 2041. The structure is 22 ft (6.7 m) long and 93 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 73
CrossesCub Creek
LocationJust SE of Spillway
RouteCounty Highway 0
CountyJefferson County
StateColorado
Coordinates39.63109, -105.32216
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating88.6 US tons
Inventory rating53.2 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckOther
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width93 ft (28.2 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,760 (2021)
Projected traffic18,124 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Road 73 over Cub Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is County Road 73 over Cub Creek 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 March 2025.

How much traffic does County Road 73 over Cub Creek carry?

About 15,760 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is County Road 73 over Cub Creek?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 93 ft wide.

Who owns County Road 73 over Cub Creek?

It is owned by the County Highway Agency.