US Bridges

NB Speer Blvd over S Platte Rvr/Rr/Water ST

Fair

Denver County, Colorado · NB Speer near I-25 Exit · Structure no. D-02-PR-090A

Built
1999
26 years old
Condition
Fair
inspected October 2024
Type
Arch - Thru
Steel
Length
414 ft
1 main span
Daily traffic
20,687
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

NB Speer Blvd over S Platte Rvr/Rr/Water ST is a steel arch - thru carrying NB Speer Blvd over S Platte Rvr/Rr/Water ST in Denver County, Colorado. It was built in 1999, so it is 26 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 20,687 vehicles a day, roughly 5% of them trucks, projected to reach 22,962 by 2041. The structure is 414 ft (126.3 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB Speer Blvd
CrossesS Platte Rvr/Rr/Water ST
LocationNB Speer near I-25 Exit
RouteCity Street 0
CountyDenver County
StateColorado
Coordinates39.75443, -105.01026
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.1 US tons
Inventory rating37.1 US tons

Structure

Structure typeArch - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length414 ft (126.3 m)
Longest span252 ft (76.8 m)
Deck width63 ft (19.1 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic20,687 (2021)
Projected traffic22,962 by 2041
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NB Speer Blvd over S Platte Rvr/Rr/Water ST built?

It was built in 1999, making it 26 years old in 2025.

What condition is NB Speer Blvd over S Platte Rvr/Rr/Water ST 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 October 2024.

How much traffic does NB Speer Blvd over S Platte Rvr/Rr/Water ST carry?

About 20,687 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is NB Speer Blvd over S Platte Rvr/Rr/Water ST?

The structure is 414 ft (126.3 m) long with a longest span of 252 ft (76.8 m) and a deck 63 ft wide.

Who owns NB Speer Blvd over S Platte Rvr/Rr/Water ST?

It is owned by the City or Municipal Highway Agency.