US Bridges

CR 4110 over North Fork Gunnison Rvr

FairPosted for load

Delta County, Colorado · 1.6 MI NE of Paonia · Structure no. DEL4175D-0.2-57

Built
1930
95 years old
Condition
Fair
inspected September 2023
Type
Truss - Thru
Steel
Length
127 ft
1 main span
Daily traffic
310
2022 count
Owner
County
County Highway Agency

About this bridge

CR 4110 over North Fork Gunnison Rvr is a steel truss - thru carrying CR 4110 over North Fork Gunnison Rvr in Delta County, Colorado. It was built in 1930, so it is 95 years old, older 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 310 vehicles a day, roughly 2% of them trucks, projected to reach 351 by 2042. The structure is 127 ft (38.6 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR 4110
CrossesNorth Fork Gunnison Rvr
Location1.6 MI NE of Paonia
RouteCounty Highway 0
CountyDelta County
StateColorado
Coordinates38.88566, -107.58161
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating17.9 US tons
Inventory rating10.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length127 ft (38.6 m)
Longest span117 ft (35.8 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deck13 ft (4 m)

Traffic and service

Average daily traffic310 (2022)
Projected traffic351 by 2042
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 4110 over North Fork Gunnison Rvr built?

It was built in 1930, making it 95 years old in 2025.

What condition is CR 4110 over North Fork Gunnison Rvr 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 September 2023.

How much traffic does CR 4110 over North Fork Gunnison Rvr carry?

About 310 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is CR 4110 over North Fork Gunnison Rvr?

The structure is 127 ft (38.6 m) long with a longest span of 117 ft (35.8 m) and a deck 16 ft wide.

Who owns CR 4110 over North Fork Gunnison Rvr?

It is owned by the County Highway Agency.