US Bridges

NB Speer Blvd over Little Raven ST

Fair

Denver County, Colorado · 0.25 MI E of Platte River · Structure no. D-04-BOST-055

Built
1990
35 years old
Condition
Fair
inspected October 2024
Type
Arch - Thru
Steel
Length
112 ft
1 main span
Daily traffic
20,687
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

NB Speer Blvd over Little Raven ST is a steel arch - thru carrying NB Speer Blvd over Little Raven ST 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 112 ft (34 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNB Speer Blvd
CrossesLittle Raven ST
Location0.25 MI E of Platte River
RouteCity Street 0
CountyDenver County
StateColorado
Coordinates39.75332, -105.00812
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 rating86.2 US tons
Inventory rating51.7 US tons

Structure

Structure typeArch - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length112 ft (34 m)
Longest span95 ft (29 m)
Deck width52 ft (15.8 m)
Roadway width45 ft (13.8 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
CrossesHighway
Detour if closed1.9 mi (3 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$788,000
NavigationNo navigation control on waterway

Frequently asked questions

When was NB Speer Blvd over Little Raven ST built?

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

What condition is NB Speer Blvd over Little Raven 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 Little Raven ST carry?

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

How long is NB Speer Blvd over Little Raven ST?

The structure is 112 ft (34 m) long with a longest span of 95 ft (29 m) and a deck 52 ft wide.

Who owns NB Speer Blvd over Little Raven ST?

It is owned by the City or Municipal Highway Agency.