US Bridges

SH 133 Frontage RD over Fire Mountain Canal

Fair

Delta County, Colorado · Orig 133 near Bowie · Structure no. I-06-U

Built
1970
55 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
10
2020 count
Owner
State
State Highway Agency

About this bridge

SH 133 Frontage RD over Fire Mountain Canal is a steel stringer/multi-beam or girder carrying SH 133 Frontage RD over Fire Mountain Canal in Delta County, Colorado. It was built in 1970, so it is 55 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 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 10 vehicles a day, roughly 16% of them trucks, projected to reach 17 by 2040. The structure is 34 ft (10.3 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSH 133 Frontage RD
CrossesFire Mountain Canal
LocationOrig 133 near Bowie
RouteState Highway 133B
Coordinates38.92474, -107.52967
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.4 US tons
Inventory rating30.8 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length34 ft (10.3 m)
Longest span32 ft (9.8 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2020)
Projected traffic17 by 2040
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Frontage RD over Fire Mountain Canal built?

It was built in 1970, making it 55 years old in 2025.

What condition is SH 133 Frontage RD over Fire Mountain Canal 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 January 2025.

How much traffic does SH 133 Frontage RD over Fire Mountain Canal carry?

About 10 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is SH 133 Frontage RD over Fire Mountain Canal?

The structure is 34 ft (10.3 m) long with a longest span of 32 ft (9.8 m) and a deck 24 ft wide.

Who owns SH 133 Frontage RD over Fire Mountain Canal?

It is owned by the State Highway Agency.