US Bridges

SH 291 Ml over Arkansas River

Fair

Chaffee County, Colorado · 6.8 MI NW of Salida · Structure no. J-12-E

Built
1962
63 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
272 ft
3 main spans
Daily traffic
3,900
2020 count
Owner
State
State Highway Agency

About this bridge

SH 291 Ml over Arkansas River is a steel continuous stringer/multi-beam or girder carrying SH 291 Ml over Arkansas River in Chaffee County, Colorado. It was built in 1962, so it is 63 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 6 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 3,900 vehicles a day, roughly 4% of them trucks, projected to reach 4,407 by 2040. The structure is 272 ft (82.9 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSH 291 Ml
CrossesArkansas River
Location6.8 MI NW of Salida
RouteState Highway 291A
Coordinates38.60798, -106.0644
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.6 US tons
Inventory rating23.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length272 ft (82.9 m)
Longest span121 ft (37 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2020)
Projected traffic4,407 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 291 Ml over Arkansas River built?

It was built in 1962, making it 63 years old in 2025.

What condition is SH 291 Ml over Arkansas River 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 November 2023.

How much traffic does SH 291 Ml over Arkansas River carry?

About 3,900 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is SH 291 Ml over Arkansas River?

The structure is 272 ft (82.9 m) long with a longest span of 121 ft (37 m) and a deck 34 ft wide.

Who owns SH 291 Ml over Arkansas River?

It is owned by the State Highway Agency.