US Bridges

SH 133 Ml over Crystal River

Fair

Pitkin County, Colorado · 2 MI S of Redstone · Structure no. H-07-F

Built
1966
59 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
37 ft
3 main spans
Daily traffic
1,600
2020 count
Owner
State
State Highway Agency

About this bridge

SH 133 Ml over Crystal River is a concrete culvert carrying SH 133 Ml over Crystal River in Pitkin County, Colorado. It was built in 1966, so it is 59 years old, older 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 5 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 1,600 vehicles a day, roughly 4% of them trucks, projected to reach 1,776 by 2040. The structure is 37 ft (11.2 m) long and 54 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSH 133 Ml
CrossesCrystal River
Location2 MI S of Redstone
RouteState Highway 133A
Coordinates39.14053, -107.25866
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating90.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.2 m)
Longest span14 ft (4.2 m)
Deck width54 ft (16.4 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2020)
Projected traffic1,776 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

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 SH 133 Ml over Crystal River built?

It was built in 1966, making it 59 years old in 2025.

What condition is SH 133 Ml over Crystal River 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 December 2024.

How much traffic does SH 133 Ml over Crystal River carry?

About 1,600 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is SH 133 Ml over Crystal River?

The structure is 37 ft (11.2 m) long with a longest span of 14 ft (4.2 m) and a deck 54 ft wide.

Who owns SH 133 Ml over Crystal River?

It is owned by the State Highway Agency.