US Bridges

County Road KK.75 over Surveyor Creek

Fair

Washington County, Colorado · 0.25 MI N. of CO RD 40.5 · Structure no. WTNKK.75-40.50A

Built
1989
36 years old
Condition
Fair
inspected October 2023
Type
Culvert
Steel
Length
43 ft
5 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

County Road KK.75 over Surveyor Creek is a steel culvert carrying County Road KK.75 over Surveyor Creek in Washington County, Colorado. It was built in 1989, so it is 36 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 40 vehicles a day, roughly 43% of them trucks, projected to reach 49 by 2042. The structure is 43 ft (13 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCounty Road KK.75
CrossesSurveyor Creek
Location0.25 MI N. of CO RD 40.5
RouteCounty Highway 0
CountyWashington County
StateColorado
Coordinates40.15286, -103.06378
Functional classRural Minor 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.5 US tons
Inventory rating47 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans5
Design loadHS 20
Structure length43 ft (13 m)
Longest span6 ft (1.8 m)
Deck width50 ft (15.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic49 by 2042
Trucks43%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 KK.75 over Surveyor Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is County Road KK.75 over Surveyor 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 2023.

How much traffic does County Road KK.75 over Surveyor Creek carry?

About 40 vehicles per day (2023 count), of which roughly 43% are trucks.

How long is County Road KK.75 over Surveyor Creek?

The structure is 43 ft (13 m) long with a longest span of 6 ft (1.8 m) and a deck 50 ft wide.

Who owns County Road KK.75 over Surveyor Creek?

It is owned by the County Highway Agency.