US Bridges

County Road 16 | E over S Boulder Creek

Fair

Gilpin County, Colorado · 6.6 MI W SH119 · Structure no. GL16-W6.6-S119A

Built
1987
38 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
46 ft
1 main span
Daily traffic
238
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 16 | E over S Boulder Creek is a steel stringer/multi-beam or girder carrying County Road 16 | E over S Boulder Creek in Gilpin County, Colorado. It was built in 1987, so it is 38 years old, younger 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 238 vehicles a day, projected to reach 286 by 2040. The structure is 46 ft (13.9 m) long and 28 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesCounty Road 16 | E
CrossesS Boulder Creek
Location6.6 MI W SH119
RouteCounty Highway 0
CountyGilpin County
StateColorado
Coordinates39.90232, -105.61444
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.3 US tons
Inventory rating28.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length46 ft (13.9 m)
Longest span42 ft (12.9 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic238 (2020)
Projected traffic286 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 16 | E over S Boulder Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is County Road 16 | E over S Boulder 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 16 | E over S Boulder Creek carry?

About 238 vehicles per day (2020 count).

How long is County Road 16 | E over S Boulder Creek?

The structure is 46 ft (13.9 m) long with a longest span of 42 ft (12.9 m) and a deck 28 ft wide.

Who owns County Road 16 | E over S Boulder Creek?

It is owned by the County Highway Agency.