Sweetwater County, WY

196 public highway bridges

Sweetwater County Bridge Snapshot

Sweetwater County, Wyoming contains 196 public highway bridges in the FHWA National Bridge Inventory. Roughly 19.4% are rated “Good,” 33.2% “Fair,” 5.1% “Poor,” and 5.1% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in WY are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

196
Total Bridges
19.4%
Good
5.1%
Poor
5.1%
Structurally Deficient

Condition Distribution

Good
19.4% (38)
Fair
33.2% (65)
Poor
5.1% (10)
SD
5.1% (10)

All Bridges (196)

I-80 WBL

Good

Over: Machinery Pass

Rock Springs - Rawlins, Sweetwater, WY

Built 1962 Load: 24.9 t ADT: 6,408

S 2nd E Street

Good

Over: Green River

Green River Streets, Sweetwater, WY

Built 2007 Load: 27.2 t ADT: 258

I-80 / US 30 Bus

Good

Over: Bitter Creek

Rock Springs, Bridger Ave, Sweetwater, WY

Built 1981 Load: 28.1 t ADT: 5,867

WYO 530

Good

Over: Henrys Fork River

Green River - Utah Line, Sweetwater, WY

Built 1963 Load: 29.0 t ADT: 988

WYO 370

Good

Over: UPRR

Jct I-80 - East, Sweetwater, WY

Built 1977 Load: 29.9 t ADT: 1,376

Industrial Drive

Good

Over: Killpecker Creek

Rock Springs, Sweetwater, WY

Built 2009 Load: 30.8 t ADT: 1,802

I-80 WBL

Good

Over: Blacks Fork River

Evanston - Green River, Sweetwater, WY

Built 1967 Load: 31.7 t ADT: 7,705

Sw Cnty Rd 19S

Good

Over: Bitter Creek

T18N R 99W S10, Sweetwater, WY

Built 1980 Load: 31.8 t ADT: 63

I-80 EBL

Good

Over: Green River

Evanston - Green River, Sweetwater, WY

Built 1966 Load: 32.7 t ADT: 8,260

I-80 WBL

Good

Over: Green River

Evanston - Green River, Sweetwater, WY

Built 1966 Load: 32.7 t ADT: 8,488

I-80 EBL

Good

Over: Gunn Draw

Rock Springs - Rawlins, Sweetwater, WY

Built 1964 Load: 32.7 t ADT: 7,088

I-80 WBL

Good

Over: Gunn Draw

Rock Springs - Rawlins, Sweetwater, WY

Built 1964 Load: 32.7 t ADT: 7,114

I-80 EBL

Good

Over: Dry Lake

Rock Springs - Rawlins, Sweetwater, WY

Built 1964 Load: 32.7 t ADT: 7,088

I-80 WBL

Good

Over: Dry Lake

Rock Springs - Rawlins, Sweetwater, WY

Built 1964 Load: 32.7 t ADT: 7,114

I-80 WBL

Good

Over: Filmore Creek

Rock Springs - Rawlins, Sweetwater, WY

Built 1962 Load: 32.7 t ADT: 6,653

WYO 414

Good

Over: Burnt Fork Creek

Jct I-80 - Utah Line, Sweetwater, WY

Built 1974 Load: 32.7 t ADT: 727

WYO 430

Good

Over: Dead Horse Canyon Creek

Rock Springs, Sweetwater, WY

Built 1959 Load: 32.7 t ADT: 1,045

2nd Street

Good

Over: Dead Horse Canyon Creek

2nd Street Rock Springs, Sweetwater, WY

Built 1940 Load: 32.7 t ADT: 5,344

WYO 530

Good

Over: Unnamed Draw

Green River - Manila, Sweetwater, WY

Built 1996 Load: 32.7 t ADT: 670

Unnamed Road

Good

Over: Unnamed Draw

Red Desert Int, Sweetwater, WY

Built 1967 Load: 32.7 t ADT: 113

I-80 WBL

Good

Over: Machinery Pass

Rock Springs Marginal, Sweetwater, WY

Built 2007 Load: 33.4 t ADT: 8,539

Sw Cnty Rd 6

Good

Over: Green River

OCI Chemical Road, Sweetwater, WY

Built 1998 Load: 34.5 t ADT: 1,040

Sw Cnty Rd 37

Good

Over: UPRR

.5 Mi. S. of Labarge Int, Sweetwater, WY

Built 2017 Load: 35.3 t ADT: 87

WYO 530

Good

Over: Blacks Fork River

Green River - Utah Line, Sweetwater, WY

Built 1963 Load: 35.4 t ADT: 2,055

Sw Cnty Rd 108

Good

Over: Eden Canal

9 Mi Ne Of Farson, Sweetwater, WY

Built 2001 Load: 39.9 t ADT: 548

4421: SHEEPS TRAIL

Good

Over: Big Sandy River

7 mi SE of Farson, WY, Sweetwater, WY

Built 2014 Load: 42.8 t ADT: 25

WYO 376

Good

Over: UPRR

Rock Springs Circumferent, Sweetwater, WY

Built 1977 Load: 44.5 t ADT: 14,824

Sw Cnty Rd 30

Good

Over: Salt Wells Creek

22 Mi Se Of Rock Springs, Sweetwater, WY

Built 2009 Load: 46.3 t ADT: 109

Sw Cnty Rd 28

Good

Over: Means Canal

9 Mi Ne Of Farson, Sweetwater, WY

Built 2009 Load: 46.3 t ADT: 113

WYO 372

Good

Over: Shute Creek

Green River - Fontenelle, Sweetwater, WY

Built 1961 Load: 46.4 t ADT: 166

Gravel road

Good

Over: Dam spillway

Big Sandy Dam N of Farson, Sweetwater, WY

Built 1952 Load: 50.4 t ADT: 20

Sw Cnty Rd 1

Good

Over: Henrys Fork River

45 Mi Sw Of Green River, Sweetwater, WY

Built 2005 Load: 51.7 t ADT: 116

Sw Cnty Rd 106

Good

Over: Means Canal

7 Mi Ne Of Farson, Sweetwater, WY

Built 2009 Load: 54.4 t ADT: 111

Grant Street

Good

Over: Bitter Creek

Rock Springs, Sweetwater, WY

Built 2010 Load: 59.9 t ADT: 4,712

I-80 EBL

Good

Over: Machinery Pass

Rock Springs Marginal, Sweetwater, WY

Built 2007 Load: 60.8 t ADT: 8,122

WYO 430

Good

Over: South Alkali Creek

Rock Springs-Hiawatha, Sweetwater, WY

Built 1952 Load: 97.2 t ADT: 243

Sw Cnty Rd 5

Poor

Over: Big Sandy River

17 Mi. S.W. Of Farson, Sweetwater, WY

Built 1960 Load: 27.2 t ADT: 9

WYO 374

Poor

Over: Green River

Jct I-80 - Green River, Sweetwater, WY

Built 1952 Load: 27.4 t ADT: 2,369

WYO 374

Poor

Over: Grease Wood Draw

Jct I-80 - Green River, Sweetwater, WY

Built 1942 Load: 32.7 t ADT: 2,369

Sw Cnty Rd 51

Poor

Over: Little Bitter Creek

6.5 Mi.Sw Of Rock Springs, Sweetwater, WY

Built 1975 Load: 32.7 t ADT: 2,234

WYO 376

Poor

Over: UPRR / Bitter Creek

Rock Springs Circumferent, Sweetwater, WY

Built 1981 Load: 36.3 t ADT: 2,593

WYO 28

Poor

Over: Green River

Farson-Fontenelle Road, Sweetwater, WY

Built 1985 Load: 37.2 t ADT: 548

WYO 530 SBL

Poor

Over: Green River

Green River, Sweetwater, WY

Built 1982 Load: 39.0 t ADT: 9,754

Sw Cnty Rd 62

Structurally Deficient

Over: Red Creek

T12N R105W S15, Sweetwater, WY

Built 1982 Load: 6.2 t ADT: 109

N Street

Structurally Deficient

Over: Bitter Creek

Rock Springs Streets, Sweetwater, WY

Built 1976 Load: 29.8 t ADT: 925

Sw Cnty Rd 51

Structurally Deficient

Over: Sweetwater Creek

County Road 51, Sweetwater, WY

Built 1975 Load: 30.8 t ADT: 2,234

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial