US Bridges

County Road 20 over Henson Creek

Fair

Hinsdale County, Colorado · 1.4 MI to Engineers Pass · Structure no. HIN02-15.65A

Built
1986
39 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
37 ft
1 main span
Daily traffic
142
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 20 over Henson Creek is a steel stringer/multi-beam or girder carrying County Road 20 over Henson Creek in Hinsdale County, Colorado. It was built in 1986, so it is 39 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 5 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 142 vehicles a day, roughly 2% of them trucks, projected to reach 171 by 2042. The structure is 37 ft (11.4 m) long and 17 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesCounty Road 20
CrossesHenson Creek
Location1.4 MI to Engineers Pass
RouteCounty Highway 0
CountyHinsdale County
StateColorado
Coordinates37.98157, -107.55813
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.4 US tons
Inventory rating21.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span34 ft (10.4 m)
Deck width17 ft (5.3 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic142 (2022)
Projected traffic171 by 2042
Trucks2%
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 statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$426,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 20 over Henson Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is County Road 20 over Henson 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 October 2024.

How much traffic does County Road 20 over Henson Creek carry?

About 142 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road 20 over Henson Creek?

The structure is 37 ft (11.4 m) long with a longest span of 34 ft (10.4 m) and a deck 17 ft wide.

Who owns County Road 20 over Henson Creek?

It is owned by the County Highway Agency.