US Bridges

County Road 83 over Duck Creek

Poor

Logan County, Colorado · 0.9 MI N of CO RD 64 · Structure no. LOG83-64.9-221A

Built
1993
32 years old
Condition
Poor
inspected December 2024
Type
Culvert
Steel
Length
20 ft
2 main spans
Daily traffic
3
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 83 over Duck Creek is a steel culvert carrying County Road 83 over Duck Creek in Logan County, Colorado. It was built in 1993, so it is 32 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, posting recommended but not legally implemented.

It carries about 3 vehicles a day, roughly 14% of them trucks, projected to reach 4 by 2042. The structure is 20 ft (6.1 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 83
CrossesDuck Creek
Location0.9 MI N of CO RD 64
RouteCounty Highway 0
CountyLogan County
StateColorado
Coordinates40.90717, -102.78709
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating12.2 US tons
Inventory rating7.3 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span8 ft (2.4 m)
Deck width40 ft (12.2 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3 (2022)
Projected traffic4 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Road 83 over Duck Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is County Road 83 over Duck Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does County Road 83 over Duck Creek carry?

About 3 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is County Road 83 over Duck Creek?

The structure is 20 ft (6.1 m) long with a longest span of 8 ft (2.4 m) and a deck 40 ft wide.

Who owns County Road 83 over Duck Creek?

It is owned by the County Highway Agency.