US Bridges

Ralston Road over Railroad

Good

Jefferson County, Colorado · 0.5 MI W of Sheridan · Structure no. ARVA-RR-5.55-04

Built
1996
29 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
117 ft
1 main span
Daily traffic
8,515
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ralston Road over Railroad is a prestressed concrete stringer/multi-beam or girder carrying Ralston Road over Railroad in Jefferson County, Colorado. It was built in 1996, so it is 29 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 8,515 vehicles a day, roughly 4% of them trucks, projected to reach 9,792 by 2041. The structure is 117 ft (35.7 m) long and 64 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesRalston Road
CrossesRailroad
Location0.5 MI W of Sheridan
RouteCity Street 0
CountyJefferson County
StateColorado
Coordinates39.80124, -105.06143
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.1 US tons
Inventory rating45.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length117 ft (35.7 m)
Longest span101 ft (30.8 m)
Deck width64 ft (19.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,515 (2021)
Projected traffic9,792 by 2041
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 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 Ralston Road over Railroad built?

It was built in 1996, making it 29 years old in 2025.

What condition is Ralston Road over Railroad 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 March 2023.

How much traffic does Ralston Road over Railroad carry?

About 8,515 vehicles per day (2021 count), of which roughly 4% are trucks.

How long is Ralston Road over Railroad?

The structure is 117 ft (35.7 m) long with a longest span of 101 ft (30.8 m) and a deck 64 ft wide.

Who owns Ralston Road over Railroad?

It is owned by the City or Municipal Highway Agency.