US Bridges

County Road 126 over N Fork of S Platte River

Good

Jefferson County, Colorado · NW Town of Buffalo Creek · Structure no. D-10-7A

Built
1997
28 years old
Condition
Good
inspected February 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
1,415
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 126 over N Fork of S Platte River is a prestressed concrete box beam or girders - single or spread carrying County Road 126 over N Fork of S Platte River in Jefferson County, Colorado. It was built in 1997, so it is 28 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 1,415 vehicles a day, roughly 4% of them trucks, projected to reach 1,627 by 2040. The structure is 88 ft (26.8 m) long and 47 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesCounty Road 126
CrossesN Fork of S Platte River
LocationNW Town of Buffalo Creek
RouteCounty Highway 0
Coordinates39.39134, -105.27663
Functional classRural 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating56.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length88 ft (26.8 m)
Longest span83 ft (25.3 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,415 (2020)
Projected traffic1,627 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 126 over N Fork of S Platte River built?

It was built in 1997, making it 28 years old in 2025.

What condition is County Road 126 over N Fork of S Platte River 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 February 2023.

How much traffic does County Road 126 over N Fork of S Platte River carry?

About 1,415 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is County Road 126 over N Fork of S Platte River?

The structure is 88 ft (26.8 m) long with a longest span of 83 ft (25.3 m) and a deck 47 ft wide.

Who owns County Road 126 over N Fork of S Platte River?

It is owned by the County Highway Agency.