US Bridges

County Road 30 over Trib. to Buck Creek

Fair

Washington County, Colorado · 0.65 Mi. E. of Co. Rd. R · Structure no. WTN30-R.65

Built
1974
51 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
15
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 30 over Trib. to Buck Creek is a steel stringer/multi-beam or girder carrying County Road 30 over Trib. to Buck Creek in Washington County, Colorado. It was built in 1974, so it is 51 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 15 vehicles a day, roughly 25% of them trucks, projected to reach 19 by 2042. The structure is 34 ft (10.3 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 30
CrossesTrib. to Buck Creek
Location0.65 Mi. E. of Co. Rd. R
RouteCounty Highway 0
CountyWashington County
StateColorado
Coordinates40.00169, -103.40844
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.3 US tons
Inventory rating8.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length34 ft (10.3 m)
Longest span32 ft (9.8 m)
Deck width26 ft (8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2023)
Projected traffic19 by 2042
Trucks25%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 30 over Trib. to Buck Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is County Road 30 over Trib. to Buck 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 30 over Trib. to Buck Creek carry?

About 15 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is County Road 30 over Trib. to Buck Creek?

The structure is 34 ft (10.3 m) long with a longest span of 32 ft (9.8 m) and a deck 26 ft wide.

Who owns County Road 30 over Trib. to Buck Creek?

It is owned by the County Highway Agency.