US Bridges

County RD 91.0 over Furness Arroyo

Fair

Las Animas County, Colorado · 1.4 MI N of CR 40 · Structure no. LA91-46-22-74

Built
1920
105 years old
Condition
Fair
inspected June 2023
Type
Arch - Deck
Concrete
Length
38 ft
1 main span
Daily traffic
1
2022 count
Owner
County
County Highway Agency

About this bridge

County RD 91.0 over Furness Arroyo is a concrete arch - deck carrying County RD 91.0 over Furness Arroyo in Las Animas County, Colorado. It was built in 1920, so it is 105 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.

It carries about 1 vehicles a day, projected to reach 1 by 2042. The structure is 38 ft (11.7 m) long and 18 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty RD 91.0
CrossesFurness Arroyo
Location1.4 MI N of CR 40
RouteCounty Highway 0
CountyLas Animas County
StateColorado
Coordinates37.31217, -104.31559
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length38 ft (11.7 m)
Longest span36 ft (11 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1 (2022)
Projected traffic1 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$123,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 91.0 over Furness Arroyo built?

It was built in 1920, making it 105 years old in 2025.

What condition is County RD 91.0 over Furness Arroyo 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 June 2023.

How much traffic does County RD 91.0 over Furness Arroyo carry?

About 1 vehicles per day (2022 count).

How long is County RD 91.0 over Furness Arroyo?

The structure is 38 ft (11.7 m) long with a longest span of 36 ft (11 m) and a deck 18 ft wide.

Who owns County RD 91.0 over Furness Arroyo?

It is owned by the County Highway Agency.