US Bridges

County Road 314 | over Clear Creek

Fair

Clear Creek County, Colorado · 1.5 MI E of Idaho Springs · Structure no. CLR314-W0.7

Built
1936
89 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
135 ft
2 main spans
Daily traffic
111
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 314 | over Clear Creek is a steel stringer/multi-beam or girder carrying County Road 314 | over Clear Creek in Clear Creek County, Colorado. It was built in 1936, so it is 89 years old, older than the Colorado average of 42.2 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 111 vehicles a day, projected to reach 139 by 2040. The structure is 135 ft (41.1 m) long and 39 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesCounty Road 314 |
CrossesClear Creek
Location1.5 MI E of Idaho Springs
RouteCounty Highway 0
CountyClear Creek County
StateColorado
Coordinates39.74288, -105.4737
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length135 ft (41.1 m)
Longest span65 ft (19.9 m)
Deck width39 ft (11.9 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic111 (2020)
Projected traffic139 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 314 | over Clear Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is County Road 314 | over Clear 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 April 2023.

How much traffic does County Road 314 | over Clear Creek carry?

About 111 vehicles per day (2020 count).

How long is County Road 314 | over Clear Creek?

The structure is 135 ft (41.1 m) long with a longest span of 65 ft (19.9 m) and a deck 39 ft wide.

Who owns County Road 314 | over Clear Creek?

It is owned by the County Highway Agency.