US Bridges

SR-128 over Nash Wash

Good

Grand County, Utah · 5 Miles W. of Cisco · Structure no. 0D 513

Built
1949
76 years old
Condition
Good
inspected September 2023
Type
Frame
Concrete
Length
56 ft
1 main span
Daily traffic
405
2014 count
Owner
State
State Highway Agency

About this bridge

SR-128 over Nash Wash is a concrete frame carrying SR-128 over Nash Wash in Grand County, Utah. It was built in 1949, so it is 76 years old, older 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 405 vehicles a day, roughly 25% of them trucks, projected to reach 507 by 2034. The structure is 56 ft (17 m) long and 32 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesSR-128
CrossesNash Wash
Location5 Miles W. of Cisco
RouteState Highway 128
CountyGrand County
StateUtah
Coordinates38.93756, -109.39822
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating10.7 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length56 ft (17 m)
Longest span50 ft (15.2 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic405 (2014)
Projected traffic507 by 2034
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-128 over Nash Wash built?

It was built in 1949, making it 76 years old in 2025.

What condition is SR-128 over Nash 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 September 2023.

How much traffic does SR-128 over Nash Wash carry?

About 405 vehicles per day (2014 count), of which roughly 25% are trucks.

How long is SR-128 over Nash Wash?

The structure is 56 ft (17 m) long with a longest span of 50 ft (15.2 m) and a deck 32 ft wide.

Who owns SR-128 over Nash Wash?

It is owned by the State Highway Agency.