US Bridges

Boulder Creek RD over Boulder Creek

Fair

Summit County, Colorado · 0.1 MI W of State HWY 9 · Structure no. 117137500.10006

Built
1945
80 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
44 ft
1 main span
Daily traffic
43
2020 count
Owner
County
County Highway Agency

About this bridge

Boulder Creek RD over Boulder Creek is a concrete stringer/multi-beam or girder carrying Boulder Creek RD over Boulder Creek in Summit County, Colorado. It was built in 1945, so it is 80 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 43 vehicles a day, projected to reach 53 by 2040. The structure is 44 ft (13.3 m) long and 22 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesBoulder Creek RD
CrossesBoulder Creek
Location0.1 MI W of State HWY 9
RouteCounty Highway 0
CountySummit County
StateColorado
Coordinates39.73723, -106.13562
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 protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length44 ft (13.3 m)
Longest span40 ft (12.3 m)
Deck width22 ft (6.6 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43 (2020)
Projected traffic53 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Boulder Creek RD over Boulder Creek built?

It was built in 1945, making it 80 years old in 2025.

What condition is Boulder Creek RD over 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 September 2024.

How much traffic does Boulder Creek RD over Boulder Creek carry?

About 43 vehicles per day (2020 count).

How long is Boulder Creek RD over Boulder Creek?

The structure is 44 ft (13.3 m) long with a longest span of 40 ft (12.3 m) and a deck 22 ft wide.

Who owns Boulder Creek RD over Boulder Creek?

It is owned by the County Highway Agency.