US Bridges

Alamo Avenue over Railroad and Lrt

Good

Arapahoe County, Colorado · Just E of Rio Grande ST · Structure no. LTNB.775-03.168

Built
1985
40 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
175 ft
2 main spans
Daily traffic
14,096
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Alamo Avenue over Railroad and Lrt is a prestressed concrete continuous box beam or girders - multiple carrying Alamo Avenue over Railroad and Lrt in Arapahoe County, Colorado. It was built in 1985, so it is 40 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,096 vehicles a day, roughly 5% of them trucks, projected to reach 17,197 by 2041. The structure is 175 ft (53.3 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesAlamo Avenue
CrossesRailroad and Lrt
LocationJust E of Rio Grande ST
RouteCity Street 0
CountyArapahoe County
StateColorado
Coordinates39.61294, -105.01421
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.9 US tons
Inventory rating39.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length175 ft (53.3 m)
Longest span90 ft (27.4 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,096 (2021)
Projected traffic17,197 by 2041
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Alamo Avenue over Railroad and Lrt built?

It was built in 1985, making it 40 years old in 2025.

What condition is Alamo Avenue over Railroad and Lrt in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Alamo Avenue over Railroad and Lrt carry?

About 14,096 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Alamo Avenue over Railroad and Lrt?

The structure is 175 ft (53.3 m) long with a longest span of 90 ft (27.4 m) and a deck 36 ft wide.

Who owns Alamo Avenue over Railroad and Lrt?

It is owned by the City or Municipal Highway Agency.