US Bridges

NB Pena Boulevard over Jackson Gap Road | Turna

Fair

Denver County, Colorado · 3.0 MI East of E-470 · Structure no. D-31-PB-540

Built
1992
33 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
188 ft
1 main span
Daily traffic
52,330
2021 count
Owner
Local
Other Local Agency

About this bridge

NB Pena Boulevard over Jackson Gap Road | Turna is a prestressed concrete box beam or girders - multiple carrying NB Pena Boulevard over Jackson Gap Road | Turna 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 52,330 vehicles a day, roughly 6% of them trucks, projected to reach 58,086 by 2041. The structure is 188 ft (57.2 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB Pena Boulevard
CrossesJackson Gap Road | Turna
Location3.0 MI East of E-470
RouteCity Street 0
CountyDenver County
StateColorado
Coordinates39.83359, -104.69314
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.1 US tons
Inventory rating42.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length188 ft (57.2 m)
Longest span182 ft (55.6 m)
Deck width54 ft (16.6 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,330 (2021)
Projected traffic58,086 by 2041
Trucks6%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 Jackson Gap Road | Turna built?

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

What condition is NB Pena Boulevard over Jackson Gap Road | Turna 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 Jackson Gap Road | Turna carry?

About 52,330 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is NB Pena Boulevard over Jackson Gap Road | Turna?

The structure is 188 ft (57.2 m) long with a longest span of 182 ft (55.6 m) and a deck 54 ft wide.

Who owns NB Pena Boulevard over Jackson Gap Road | Turna?

It is owned by the Other Local Agency.