US Bridges

Mcconnell Drive over Saint Vrain Creek

Fair

Boulder County, Colorado · 50 Ft S of US36 / SH66 · Structure no. LYMCCON-W.02-36

Built
2006
19 years old
Condition
Fair
inspected January 2025
Type
Frame
Concrete
Length
96 ft
3 main spans
Daily traffic
2,031
2023 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Mcconnell Drive over Saint Vrain Creek is a concrete frame carrying Mcconnell Drive over Saint Vrain Creek in Boulder County, Colorado. It was built in 2006, so it is 19 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 2,031 vehicles a day, roughly 7% of them trucks, projected to reach 2,437 by 2043. The structure is 96 ft (29.2 m) long and 61 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesMcconnell Drive
CrossesSaint Vrain Creek
Location50 Ft S of US36 / SH66
RouteCity Street 0
CountyBoulder County
StateColorado
Coordinates40.2178, -105.26031
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckOther
Main spans3
Design loadHS 20
Structure length96 ft (29.2 m)
Longest span30 ft (9.1 m)
Deck width61 ft (18.6 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,031 (2023)
Projected traffic2,437 by 2043
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Mcconnell Drive over Saint Vrain Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Mcconnell Drive over Saint Vrain 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 January 2025.

How much traffic does Mcconnell Drive over Saint Vrain Creek carry?

About 2,031 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Mcconnell Drive over Saint Vrain Creek?

The structure is 96 ft (29.2 m) long with a longest span of 30 ft (9.1 m) and a deck 61 ft wide.

Who owns Mcconnell Drive over Saint Vrain Creek?

It is owned by the Town or Township Highway Agency.