US Bridges

County Road Ss over Ft. Lyon Canal

Fair

Prowers County, Colorado · Just W of CR 6 · Structure no. PRSS-4.8-38-13

Built
1960
65 years old, rebuilt 2002
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
183
2022 count
Owner
County
County Highway Agency

About this bridge

County Road Ss over Ft. Lyon Canal is a steel stringer/multi-beam or girder carrying County Road Ss over Ft. Lyon Canal in Prowers County, Colorado. It was built in 1960 and reconstructed in 2002, so it is 65 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 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 183 vehicles a day, projected to reach 218 by 2042. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road Ss
CrossesFt. Lyon Canal
LocationJust W of CR 6
RouteCounty Highway 0
CountyProwers County
StateColorado
Coordinates38.20157, -102.65141
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
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 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating38.1 US tons
Inventory rating22.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic183 (2022)
Projected traffic218 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Ss over Ft. Lyon Canal built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2002.

What condition is County Road Ss over Ft. Lyon Canal 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 Ss over Ft. Lyon Canal carry?

About 183 vehicles per day (2022 count).

How long is County Road Ss over Ft. Lyon Canal?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 28 ft wide.

Who owns County Road Ss over Ft. Lyon Canal?

It is owned by the County Highway Agency.