US Bridges

County Road 306 | over Clear Creek

Good

Clear Creek County, Colorado · 1 MI NE Georgetown Lake · Structure no. CLR306-1.65A

Built
2008
17 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
391
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 306 | over Clear Creek is a steel stringer/multi-beam or girder carrying County Road 306 | over Clear Creek in Clear Creek County, Colorado. It was built in 2008, so it is 17 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 391 vehicles a day, projected to reach 489 by 2040. The structure is 73 ft (22.1 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 306 |
CrossesClear Creek
Location1 MI NE Georgetown Lake
RouteCounty Highway 0
CountyClear Creek County
StateColorado
Coordinates39.73615, -105.68567
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating32.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length73 ft (22.1 m)
Longest span68 ft (20.8 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic391 (2020)
Projected traffic489 by 2040
Trucks0%
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 306 | over Clear Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is County Road 306 | over Clear 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 April 2023.

How much traffic does County Road 306 | over Clear Creek carry?

About 391 vehicles per day (2020 count).

How long is County Road 306 | over Clear Creek?

The structure is 73 ft (22.1 m) long with a longest span of 68 ft (20.8 m) and a deck 31 ft wide.

Who owns County Road 306 | over Clear Creek?

It is owned by the County Highway Agency.