US Bridges

NB Pena Boulevard over Third Creek | 75th Avenu

Fair

Denver County, Colorado · 3.5 MI East of E-470 · Structure no. D-31-PB-630

Built
1992
33 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
55,210
2021 count
Owner
Local
Other Local Agency

About this bridge

NB Pena Boulevard over Third Creek | 75th Avenu is a concrete culvert carrying NB Pena Boulevard over Third Creek | 75th Avenu in Denver County, Colorado. It was built in 1992, so it is 33 years old, younger 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 55,210 vehicles a day, roughly 6% of them trucks, projected to reach 61,283 by 2041. The structure is 21 ft (6.4 m) long and 174 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNB Pena Boulevard
CrossesThird Creek | 75th Avenu
Location3.5 MI East of E-470
RouteCity Street 0
Coordinates39.83327, -104.6813
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.8 US tons
Inventory rating32.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width174 ft (53.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55,210 (2021)
Projected traffic61,283 by 2041
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local 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 NB Pena Boulevard over Third Creek | 75th Avenu built?

It was built in 1992, making it 33 years old in 2025.

What condition is NB Pena Boulevard over Third Creek | 75th Avenu 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 NB Pena Boulevard over Third Creek | 75th Avenu carry?

About 55,210 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is NB Pena Boulevard over Third Creek | 75th Avenu?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 174 ft wide.

Who owns NB Pena Boulevard over Third Creek | 75th Avenu?

It is owned by the Other Local Agency.