US Bridges

S Pratt Parkway over Left Hand Creek

Good

Boulder County, Colorado · At Missouri Avenue · Structure no. LONG-PRAPK-MISA

Built
2012
13 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
57 ft
3 main spans
Daily traffic
4,798
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

S Pratt Parkway over Left Hand Creek is a concrete culvert carrying S Pratt Parkway over Left Hand Creek in Boulder County, Colorado. It was built in 2012, so it is 13 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,798 vehicles a day, roughly 6% of them trucks, projected to reach 5,758 by 2043. The structure is 57 ft (17.4 m) long and 94 ft wide.

CarriesS Pratt Parkway
CrossesLeft Hand Creek
LocationAt Missouri Avenue
RouteCity Street 0
Coordinates40.14469, -105.10628
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating44.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length57 ft (17.4 m)
Longest span20 ft (6.1 m)
Deck width94 ft (28.7 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,798 (2023)
Projected traffic5,758 by 2043
Trucks6%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 S Pratt Parkway over Left Hand Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is S Pratt Parkway over Left Hand Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does S Pratt Parkway over Left Hand Creek carry?

About 4,798 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is S Pratt Parkway over Left Hand Creek?

The structure is 57 ft (17.4 m) long with a longest span of 20 ft (6.1 m) and a deck 94 ft wide.

Who owns S Pratt Parkway over Left Hand Creek?

It is owned by the City or Municipal Highway Agency.