US Bridges

72nd Avenue over Leyden Creek

Fair

Jefferson County, Colorado · 0.2 MI W of Simms ST · Structure no. ARVA-72-0.80-01

Built
1970
55 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
14,073
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

72nd Avenue over Leyden Creek is a prestressed concrete tee beam carrying 72nd Avenue over Leyden Creek in Jefferson 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 14,073 vehicles a day, roughly 5% of them trucks, projected to reach 16,184 by 2041. The structure is 41 ft (12.5 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries72nd Avenue
CrossesLeyden Creek
Location0.2 MI W of Simms ST
RouteCity Street 0
Coordinates39.82704, -105.13218
Functional classUrban Other Principal 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 protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span39 ft (11.8 m)
Deck width40 ft (12.2 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,073 (2021)
Projected traffic16,184 by 2041
Trucks5%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 72nd Avenue over Leyden Creek built?

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

What condition is 72nd Avenue over Leyden 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 March 2023.

How much traffic does 72nd Avenue over Leyden Creek carry?

About 14,073 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 72nd Avenue over Leyden Creek?

The structure is 41 ft (12.5 m) long with a longest span of 39 ft (11.8 m) and a deck 40 ft wide.

Who owns 72nd Avenue over Leyden Creek?

It is owned by the City or Municipal Highway Agency.