US Bridges

NB Speer Blvd over BNSF Rr/Rtd Lr

Fair

Denver County, Colorado · 0.3 Mile E of I-25 · Structure no. D-06-BORR-040

Built
1990
35 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Steel
Length
153 ft
1 main span
Daily traffic
20,687
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

NB Speer Blvd over BNSF Rr/Rtd Lr is a steel box beam or girders - single or spread carrying NB Speer Blvd over BNSF Rr/Rtd Lr in Denver County, Colorado. It was built in 1990, so it is 35 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 153 ft (46.6 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNB Speer Blvd
CrossesBNSF Rr/Rtd Lr
Location0.3 Mile E of I-25
RouteCity Street 0
CountyDenver County
StateColorado
Coordinates39.75164, -105.00682
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.5 US tons
Inventory rating44.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span148 ft (45.1 m)
Deck width60 ft (18.4 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,687 (2021)
Projected traffic22,962 by 2041
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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 statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was NB Speer Blvd over BNSF Rr/Rtd Lr built?

It was built in 1990, making it 35 years old in 2025.

What condition is NB Speer Blvd over BNSF Rr/Rtd Lr 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 BNSF Rr/Rtd Lr carry?

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

How long is NB Speer Blvd over BNSF Rr/Rtd Lr?

The structure is 153 ft (46.6 m) long with a longest span of 148 ft (45.1 m) and a deck 60 ft wide.

Who owns NB Speer Blvd over BNSF Rr/Rtd Lr?

It is owned by the City or Municipal Highway Agency.