US Bridges

152nd Avenue over Speer Canal

Fair

Adams County, Colorado · 0.5 MI E of I-76 · Structure no. ADA152-I76.0194

Built
1980
45 years old
Condition
Fair
inspected December 2023
Type
Arch - Deck
Steel
Length
30 ft
2 main spans
Daily traffic
7,679
2021 count
Owner
County
County Highway Agency

About this bridge

152nd Avenue over Speer Canal is a steel arch - deck carrying 152nd Avenue over Speer Canal in Adams County, Colorado. It was built in 1980, so it is 45 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 7,679 vehicles a day, roughly 9% of them trucks, projected to reach 9,983 by 2041. The structure is 30 ft (9.1 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries152nd Avenue
CrossesSpeer Canal
Location0.5 MI E of I-76
RouteCounty Highway 0
CountyAdams County
StateColorado
Coordinates39.97233, -104.74555
Functional classRural Major 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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating73 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span14 ft (4.3 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,679 (2021)
Projected traffic9,983 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$151,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 152nd Avenue over Speer Canal built?

It was built in 1980, making it 45 years old in 2025.

What condition is 152nd Avenue over Speer 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 December 2023.

How much traffic does 152nd Avenue over Speer Canal carry?

About 7,679 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is 152nd Avenue over Speer Canal?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.3 m) and a deck 32 ft wide.

Who owns 152nd Avenue over Speer Canal?

It is owned by the County Highway Agency.