US Bridges

Main Street over Railroad and Lrt

Good

Arapahoe County, Colorado · Just E of Rio Grande ST · Structure no. LTNB.750-03.175

Built
1985
40 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
110 ft
1 main span
Daily traffic
12,746
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Main Street over Railroad and Lrt is a prestressed concrete box beam or girders - multiple carrying Main Street 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 12,746 vehicles a day, roughly 2% of them trucks, projected to reach 15,550 by 2041. The structure is 110 ft (33.6 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMain Street
CrossesRailroad and Lrt
LocationJust E of Rio Grande ST
RouteCity Street 0
Coordinates39.61355, -105.01389
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.7 US tons
Inventory rating35.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length110 ft (33.6 m)
Longest span105 ft (32 m)
Deck width52 ft (16 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,746 (2021)
Projected traffic15,550 by 2041
Trucks2%
Lanes on structure3
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Main Street over Railroad and Lrt built?

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

What condition is Main Street 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 Main Street over Railroad and Lrt carry?

About 12,746 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Main Street over Railroad and Lrt?

The structure is 110 ft (33.6 m) long with a longest span of 105 ft (32 m) and a deck 52 ft wide.

Who owns Main Street over Railroad and Lrt?

It is owned by the City or Municipal Highway Agency.