US Bridges

STC2744;3700 N. RD over Snake R.;n.Murtaugh Br.

Fair

Twin Falls County, Idaho · 0.5 N. 0.5 E. Murtaugh · Structure no. 000000000019460

Built
1983
42 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
289 ft
2 main spans
Daily traffic
300
2023 count
Owner
Local
Other Local Agency

About this bridge

STC2744;3700 N. RD over Snake R.;n.Murtaugh Br. is a steel continuous stringer/multi-beam or girder carrying STC2744;3700 N. RD over Snake R.;n.Murtaugh Br. in Twin Falls County, Idaho. It was built in 1983, so it is 42 years old, younger than the Idaho average of 45.3 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 300 vehicles a day, roughly 20% of them trucks, projected to reach 450 by 2042. The structure is 289 ft (88.1 m) long and 34 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesSTC2744;3700 N. RD
CrossesSnake R.;n.Murtaugh Br.
Location0.5 N. 0.5 E. Murtaugh
RouteCounty Highway 2744
CountyTwin Falls County
StateIdaho
Coordinates42.49925, -114.15389
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length289 ft (88.1 m)
Longest span150 ft (45.7 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2023)
Projected traffic450 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was STC2744;3700 N. RD over Snake R.;n.Murtaugh Br. built?

It was built in 1983, making it 42 years old in 2025.

What condition is STC2744;3700 N. RD over Snake R.;n.Murtaugh Br. 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 February 2023.

How much traffic does STC2744;3700 N. RD over Snake R.;n.Murtaugh Br. carry?

About 300 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is STC2744;3700 N. RD over Snake R.;n.Murtaugh Br.?

The structure is 289 ft (88.1 m) long with a longest span of 150 ft (45.7 m) and a deck 34 ft wide.

Who owns STC2744;3700 N. RD over Snake R.;n.Murtaugh Br.?

It is owned by the Other Local Agency.