US Bridges

County Road N50 over Tongue Creek

Good

Delta County, Colorado · 1.9 MI NW of SH 65 · Structure no. DELN50R-20-19A

Built
2008
17 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
604
2022 count
Owner
County
County Highway Agency

About this bridge

County Road N50 over Tongue Creek is a prestressed concrete stringer/multi-beam or girder carrying County Road N50 over Tongue Creek in Delta County, Colorado. It was built in 2008, so it is 17 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 604 vehicles a day, roughly 2% of them trucks, projected to reach 682 by 2042. The structure is 64 ft (19.5 m) long and 38 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCounty Road N50
CrossesTongue Creek
Location1.9 MI NW of SH 65
RouteCounty Highway 0
CountyDelta County
StateColorado
Coordinates38.85036, -107.98989
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.2 US tons
Inventory rating73.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length64 ft (19.5 m)
Longest span60 ft (18.3 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic604 (2022)
Projected traffic682 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Road N50 over Tongue Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is County Road N50 over Tongue Creek 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 County Road N50 over Tongue Creek carry?

About 604 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road N50 over Tongue Creek?

The structure is 64 ft (19.5 m) long with a longest span of 60 ft (18.3 m) and a deck 38 ft wide.

Who owns County Road N50 over Tongue Creek?

It is owned by the County Highway Agency.