US Bridges

SH 131 Ml over Egeria Creek

Fair

Routt County, Colorado · 40 MI S of Stmboat Sprngs · Structure no. D-09-AC

Built
1948
77 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
43 ft
1 main span
Daily traffic
1,000
2020 count
Owner
State
State Highway Agency

About this bridge

SH 131 Ml over Egeria Creek is a steel stringer/multi-beam or girder carrying SH 131 Ml over Egeria Creek in Routt County, Colorado. It was built in 1948, so it is 77 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 1,000 vehicles a day, roughly 9% of them trucks, projected to reach 1,170 by 2040. The structure is 43 ft (13.1 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSH 131 Ml
CrossesEgeria Creek
Location40 MI S of Stmboat Sprngs
RouteState Highway 131B
Coordinates40.03623, -106.78237
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length43 ft (13.1 m)
Longest span39 ft (11.9 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic1,170 by 2040
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 131 Ml over Egeria Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is SH 131 Ml over Egeria Creek 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 July 2024.

How much traffic does SH 131 Ml over Egeria Creek carry?

About 1,000 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is SH 131 Ml over Egeria Creek?

The structure is 43 ft (13.1 m) long with a longest span of 39 ft (11.9 m) and a deck 36 ft wide.

Who owns SH 131 Ml over Egeria Creek?

It is owned by the State Highway Agency.