US Bridges

Poncha Springs LN over South Arkansas River

Good

Chaffee County, Colorado · 0.1 MI S of US 50 · Structure no. PONCHA-3

Built
2014
11 years old
Condition
Good
inspected March 2024
Type
Arch - Deck
Steel
Length
42 ft
2 main spans
Daily traffic
475
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Poncha Springs LN over South Arkansas River is a steel arch - deck carrying Poncha Springs LN over South Arkansas River in Chaffee County, Colorado. It was built in 2014, so it is 11 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 475 vehicles a day, projected to reach 580 by 2042. The structure is 42 ft (12.8 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesPoncha Springs LN
CrossesSouth Arkansas River
Location0.1 MI S of US 50
RouteCity Street 0
Coordinates38.51161, -106.06621
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating106.8 US tons
Inventory rating92.8 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span20 ft (6.1 m)
Deck width40 ft (12.2 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2022)
Projected traffic580 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Poncha Springs LN over South Arkansas River built?

It was built in 2014, making it 11 years old in 2025.

What condition is Poncha Springs LN over South Arkansas River 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 2024.

How much traffic does Poncha Springs LN over South Arkansas River carry?

About 475 vehicles per day (2022 count).

How long is Poncha Springs LN over South Arkansas River?

The structure is 42 ft (12.8 m) long with a longest span of 20 ft (6.1 m) and a deck 40 ft wide.

Who owns Poncha Springs LN over South Arkansas River?

It is owned by the Town or Township Highway Agency.