US Bridges

Cnty.Road-Fas# 370 over Big Hollow Wash

Good

Iron County, Utah · 1.8 Mi.So. of Wecco Plant · Structure no. 021012D

Built
1989
36 years old
Condition
Good
inspected March 2024
Type
Frame
Concrete
Length
26 ft
1 main span
Daily traffic
1,550
2010 count
Owner
County
County Highway Agency

About this bridge

Cnty.Road-Fas# 370 over Big Hollow Wash is a concrete frame carrying Cnty.Road-Fas# 370 over Big Hollow Wash in Iron County, Utah. It was built in 1989, so it is 36 years old, younger than the Utah average of 40.1 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 1,550 vehicles a day, roughly 15% of them trucks, projected to reach 1,884 by 2030. The structure is 26 ft (7.8 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCnty.Road-Fas# 370
CrossesBig Hollow Wash
Location1.8 Mi.So. of Wecco Plant
RouteCounty Highway 1740
CountyIron County
StateUtah
Coordinates37.77378, -113.2645
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length26 ft (7.8 m)
Longest span24 ft (7.3 m)
Deck width40 ft (12.2 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,550 (2010)
Projected traffic1,884 by 2030
Trucks15%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cnty.Road-Fas# 370 over Big Hollow Wash built?

It was built in 1989, making it 36 years old in 2025.

What condition is Cnty.Road-Fas# 370 over Big Hollow Wash 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 Cnty.Road-Fas# 370 over Big Hollow Wash carry?

About 1,550 vehicles per day (2010 count), of which roughly 15% are trucks.

How long is Cnty.Road-Fas# 370 over Big Hollow Wash?

The structure is 26 ft (7.8 m) long with a longest span of 24 ft (7.3 m) and a deck 40 ft wide.

Who owns Cnty.Road-Fas# 370 over Big Hollow Wash?

It is owned by the County Highway Agency.