US Bridges

88th Avenue over Obrian Canal

Fair

Adams County, Colorado · 0.5 MI E of Brighton Blvd · Structure no. ADA088-008.0047

Built
1970
55 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
19,093
2021 count
Owner
County
County Highway Agency

About this bridge

88th Avenue over Obrian Canal is a prestressed concrete tee beam carrying 88th Avenue over Obrian Canal in Adams 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 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 19,093 vehicles a day, roughly 10% of them trucks, projected to reach 24,821 by 2041. The structure is 51 ft (15.4 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries88th Avenue
CrossesObrian Canal
Location0.5 MI E of Brighton Blvd
RouteCounty Highway 0
CountyAdams County
StateColorado
Coordinates39.85618, -104.90336
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
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
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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length51 ft (15.4 m)
Longest span48 ft (14.5 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,093 (2021)
Projected traffic24,821 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 88th Avenue over Obrian Canal built?

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

What condition is 88th Avenue over Obrian 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 88th Avenue over Obrian Canal carry?

About 19,093 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is 88th Avenue over Obrian Canal?

The structure is 51 ft (15.4 m) long with a longest span of 48 ft (14.5 m) and a deck 40 ft wide.

Who owns 88th Avenue over Obrian Canal?

It is owned by the County Highway Agency.