US Bridges

US 285 Access RD over N Fk S Platte River Ar

Good

Park County, Colorado · Moore Dale Road · Structure no. G-14-U

Built
1995
30 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
136
2024 count
Owner
State
State Highway Agency

About this bridge

US 285 Access RD over N Fk S Platte River Ar is a prestressed concrete box beam or girders - single or spread carrying US 285 Access RD over N Fk S Platte River Ar in Park County, Colorado. It was built in 1995, so it is 30 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 136 vehicles a day, roughly 10% of them trucks, projected to reach 182 by 2044. The structure is 63 ft (19.2 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 285 Access RD
CrossesN Fk S Platte River Ar
LocationMoore Dale Road
RouteU.S. Route 285D
Coordinates39.41369, -105.51981
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.9 US tons
Inventory rating32.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic136 (2024)
Projected traffic182 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 285 Access RD over N Fk S Platte River Ar built?

It was built in 1995, making it 30 years old in 2025.

What condition is US 285 Access RD over N Fk S Platte River Ar 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 August 2023.

How much traffic does US 285 Access RD over N Fk S Platte River Ar carry?

About 136 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is US 285 Access RD over N Fk S Platte River Ar?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns US 285 Access RD over N Fk S Platte River Ar?

It is owned by the State Highway Agency.