US Bridges

Ireland Way over E-470

Fair

Arapahoe County, Colorado · 7.78 MI from I25 · Structure no. E-470-07.78C

Built
1996
29 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
263 ft
2 main spans
Daily traffic
46,000
2018 count
Owner
Toll Authority
Local Toll Authority

About this bridge

Ireland Way over E-470 is a prestressed concrete continuous stringer/multi-beam or girder carrying Ireland Way over E-470 in Arapahoe County, Colorado. It was built in 1996, so it is 29 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 46,000 vehicles a day, roughly 4% of them trucks, projected to reach 595 by 2038. The structure is 263 ft (80.3 m) long and 46 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesIreland Way
CrossesE-470
Location7.78 MI from I25
RouteCity Street 0
CountyArapahoe County
StateColorado
Coordinates39.57614, -104.74483
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
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 rating72.1 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length263 ft (80.3 m)
Longest span148 ft (45 m)
Deck width46 ft (14 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,000 (2018)
Projected traffic595 by 2038
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
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 Ireland Way over E-470 built?

It was built in 1996, making it 29 years old in 2025.

What condition is Ireland Way over E-470 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 July 2024.

How much traffic does Ireland Way over E-470 carry?

About 46,000 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is Ireland Way over E-470?

The structure is 263 ft (80.3 m) long with a longest span of 148 ft (45 m) and a deck 46 ft wide.

Who owns Ireland Way over E-470?

It is owned by the Local Toll Authority.