US Bridges

County Road 132 over Boulder Creek

Fair

Boulder County, Colorado · 75 Ft S of ST HWY 119 · Structure no. BC-132-0.1-BO

Built
1935
90 years old, rebuilt 1984
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
846
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 132 over Boulder Creek is a prestressed concrete box beam or girders - multiple carrying County Road 132 over Boulder Creek in Boulder County, Colorado. It was built in 1935 and reconstructed in 1984, so it is 90 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 846 vehicles a day, roughly 17% of them trucks, projected to reach 1,015 by 2043. The structure is 37 ft (11.2 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesCounty Road 132
CrossesBoulder Creek
Location75 Ft S of ST HWY 119
RouteCounty Highway 0
CountyBoulder County
StateColorado
Coordinates40.00529, -105.34921
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
Deck9 ExcellentNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating81.4 US tons
Inventory rating63.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length37 ft (11.2 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic846 (2023)
Projected traffic1,015 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 132 over Boulder Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1984.

What condition is County Road 132 over Boulder 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 January 2025.

How much traffic does County Road 132 over Boulder Creek carry?

About 846 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is County Road 132 over Boulder Creek?

The structure is 37 ft (11.2 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns County Road 132 over Boulder Creek?

It is owned by the County Highway Agency.