US Bridges

Federal Parkway over Big Dry Creek

Good

Adams County, Colorado · .6 MI N of 120th Ave · Structure no. WST20-05-C

Built
2002
23 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
179 ft
2 main spans
Daily traffic
14,581
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Federal Parkway over Big Dry Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying Federal Parkway over Big Dry Creek in Adams County, Colorado. It was built in 2002, so it is 23 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 14,581 vehicles a day, roughly 2% of them trucks, projected to reach 18,955 by 2041. The structure is 179 ft (54.6 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFederal Parkway
CrossesBig Dry Creek
Location.6 MI N of 120th Ave
RouteCity Street 0
Coordinates39.9231, -105.01438
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating88.3 US tons
Inventory rating52.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 25 or greater
Structure length179 ft (54.6 m)
Longest span85 ft (25.9 m)
Deck width40 ft (12.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,581 (2021)
Projected traffic18,955 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Federal Parkway over Big Dry Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is Federal Parkway over Big Dry 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 December 2023.

How much traffic does Federal Parkway over Big Dry Creek carry?

About 14,581 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Federal Parkway over Big Dry Creek?

The structure is 179 ft (54.6 m) long with a longest span of 85 ft (25.9 m) and a deck 40 ft wide.

Who owns Federal Parkway over Big Dry Creek?

It is owned by the City or Municipal Highway Agency.