US Bridges

US6RMP &unionb over Light Rail

Fair

Jefferson County, Colorado · Union Blvd S of 6th/US 6 · Structure no. F-16-XL

Built
2010
15 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
63,000
2020 count
Owner
State
State Highway Agency

About this bridge

US6RMP &unionb over Light Rail is a concrete slab carrying US6RMP &unionb over Light Rail in Jefferson County, Colorado. It was built in 2010, so it is 15 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 63,000 vehicles a day, roughly 2% of them trucks, projected to reach 71,190 by 2040. The structure is 27 ft (8.1 m) long and 146 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS6RMP &unionb
CrossesLight Rail
LocationUnion Blvd S of 6th/US 6
RouteU.S. Route 6G
CountyJefferson County
StateColorado
Coordinates39.72434, -105.13144
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.8 US tons
Inventory rating71.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length27 ft (8.1 m)
Longest span21 ft (6.5 m)
Deck width146 ft (44.6 m)
Roadway width143 ft (43.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63,000 (2020)
Projected traffic71,190 by 2040
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US6RMP &unionb over Light Rail built?

It was built in 2010, making it 15 years old in 2025.

What condition is US6RMP &unionb over Light Rail 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 US6RMP &unionb over Light Rail carry?

About 63,000 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is US6RMP &unionb over Light Rail?

The structure is 27 ft (8.1 m) long with a longest span of 21 ft (6.5 m) and a deck 146 ft wide.

Who owns US6RMP &unionb over Light Rail?

It is owned by the State Highway Agency.