US Bridges

CR 15A/MIDNIGHT M over Castle Creek

Fair

Pitkin County, Colorado · Just E of CR 15 · Structure no. PIT-15A-00.2A

Built
1999
26 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
67
2022 count
Owner
County
County Highway Agency

About this bridge

CR 15A/MIDNIGHT M over Castle Creek is a steel stringer/multi-beam or girder carrying CR 15A/MIDNIGHT M over Castle Creek in Pitkin County, Colorado. It was built in 1999, so it is 26 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 67 vehicles a day, projected to reach 74 by 2042. The structure is 80 ft (24.4 m) long and 27 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesCR 15A/MIDNIGHT M
CrossesCastle Creek
LocationJust E of CR 15
RouteCounty Highway 0
CountyPitkin County
StateColorado
Coordinates39.15836, -106.84836
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating81.2 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span75 ft (22.9 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck19 ft (5.8 m)

Traffic and service

Average daily traffic67 (2022)
Projected traffic74 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 CR 15A/MIDNIGHT M over Castle Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is CR 15A/MIDNIGHT M over Castle 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 May 2024.

How much traffic does CR 15A/MIDNIGHT M over Castle Creek carry?

About 67 vehicles per day (2022 count).

How long is CR 15A/MIDNIGHT M over Castle Creek?

The structure is 80 ft (24.4 m) long with a longest span of 75 ft (22.9 m) and a deck 27 ft wide.

Who owns CR 15A/MIDNIGHT M over Castle Creek?

It is owned by the County Highway Agency.