Iron County, UT

70 public highway bridges

Iron County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Iron County, Utah contains 70 public highway bridges. Roughly 5.7% are rated “Good,” 47.1% “Fair,” and 1.4% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

70

Total Bridges

5.7%

Good

47.1%

Fair

1.4%

Poor Condition

Condition Distribution

Good

5.7% (4)

Fair

47.1% (33)

Poor

1.4% (1)

All Bridges (70)

Sort:

RD.TO HAMILTON FT.

Over: I-15 (SR-15) NBL & SBL

2.6 MI. SO. of CEDAR CITY, Iron, UT

Built 1967 ADT: 23,880

SR-143

Over: I-15 (SR-15) NBL AND SBL

SO.PAROWAN INTERCHANGE, Iron, UT

Built 1973 ADT: 21,585

SR-274 INT. X-ROAD

Over: I-15 (SR-15) NBL & SBL

NORTH PAROWAN INTERCHANGE, Iron, UT

Built 1973 ADT: 18,610

SR-271,INT. X-ROAD

Over: I-15 (SR-15) NBL & SBL

PARAGONAH INTERCHANGE, Iron, UT

Built 1975 ADT: 18,265

CENTER STREET

Over: I-15 (SR-15) NBL AND SBL

IN CEDAR CITY, Iron, UT

Built 1968 ADT: 24,835

CO.RD.-BUCKHORN FL

Over: I-15 (SR-15) NBL & SBL

7.6 MI.NO.PARAGONAH INTER, Iron, UT

Built 1979 ADT: 18,190

SR-20, INT.X-ROAD

Over: I-15 (SR-15) NBL & SBL

BEAR VALLEY INTERCHANGE, Iron, UT

Built 1979 ADT: 18,190

SR-130, INT.X-ROAD

Over: I-15 (SR-15)

NORTH CEDAR INTERCHANGE, Iron, UT

Built 2002 ADT: 24,335

County Road

Over: I-15 (SR-15) NBL & SBL

4.2 Mi. N.of New Harmony, Iron, UT

Built 1966 ADT: 23,085

I-15(SR-15)NB, SB

Over: CO.RD.TO KANES SPRING

3.2 MI.NO.SO.PAROWAN INT, Iron, UT

CO.RD.INTER X-ROAD

Over: I-15 (SR-15) NBL AND SBL

SUMMIT INTERCHANGE, Iron, UT

Built 1970 ADT: 21,585

600 SOUTH STREET

Over: I-15 (SR-15)

IN CEDAR CITY, Iron, UT

Built 1968 ADT: 24,835

COUNTY RD.INT.X-RD

Over: I-15 (SR-15) NBL & S

FREMONT INTERCHANGE, Iron, UT

Built 1984 ADT: 18,840

CO.RD.-BIG FIELDS

Over: I-15 (SR-15) NBL AND SBL

2.1 MI.NO.NO.PAROWAN INT., Iron, UT

Built 1973 ADT: 18,265

I-15 (SR-15) NBL

Over: CO RD TO KANARRAVILLE

NO KANARRAVILLE INTERCHG., Iron, UT

Built 1966 ADT: 475

I-15 (SR-15) NBL

Over: COUNTY ROAD-NO. FIELD

2.2 MI.NO.CEDAR CITY INT., Iron, UT

I-15 (SR-15) NBL

Over: 560 NORTH STREET & U

0.7 MI.NO.CEDAR CITY INT., Iron, UT

Built 1968 ADT: 1,387

I-15 (SR-15) NBL

Over: SR-56,200 NORTH STREET

CEDAR CITY INTERCHANGE, Iron, UT

Built 1968 ADT: 11,510

I-15 (SR-15) NBL

Over: CITY ST. & INT. X-RO

SOUTH CEDAR CITY INTCHG., Iron, UT

I-15 (SR-15) NBL

Over: CO. RD. TO PAROWAN GAP

1.5 MI.NO.SO.PAROWAN INT., Iron, UT

I-15 (SR-15) NBL

Over: CO.RD. N. OF SUMMIT Int.

0.7 MI.NO.SUMMIT INTERCHG, Iron, UT

SR-130 SBL ONLY

Over: I-15 (SR-15) NBL & S

SO CEDAR CITY INTERCHANGE, Iron, UT

Built 1967 ADT: 23,880

I-15 (SR-15) SBL

Over: CO RD TO KANARRAVILLE

NO.KANARRAVILLE INTCHG., Iron, UT

Built 1966 ADT: 475

I-15 (SR-15) SBL

Over: CITY ST. TO NO. FIELDS

2.2 MI NO CEDAR CITY INT., Iron, UT

I-15 (SR-15) SBL

Over: 560 N.

0.7 MI.N.CEDAR CITY INT., Iron, UT

I-15 (SR-15) SBL

Over: SR-56,200 NORTH STREET

CEDAR CITY INTERCHANGE, Iron, UT

Built 1968 ADT: 11,510

I-15 (SR-15) SBL

Over: CITY ST. , INT. X-ROAD.

SO.CEDAR CITY INTCHG., Iron, UT

I-15 (SR-15) SBL

Over: CO. RD. TO PAROWAN GAP

1.5 MI.NO.SO.PAROWAN INT., Iron, UT

I-15 (SR-15) SBL

Over: CO.RD. NO.of SUMMIT INT.

0.7 MI.NO.SUMMIT INTCHG., Iron, UT

Coal Creek Road

Over: I-15

1 Mi No Cedar City Int, Iron, UT

Built 2021 ADT: 30,000

I-15 NB

Over: East Nichols Canyon Road

I-15 NB over E Nichols Rd, Iron, UT

Built 2021 ADT: 500

I-15 SB

Over: East Nichols Canyon Road

I-15 SB over E Nichols Rd, Iron, UT

Built 2021 ADT: 500

CITY STREET

Over: COAL CREEK

1 MILE NW OF CEDAR CITY, Iron, UT

Built 1969 Load: 7.5 t ADT: 3,872

PAROWAN MAIN ST.

Over: PAROWAN CREEK

SOUTH END PAROWAN MAIN ST, Iron, UT

Built 1925 Load: 19.1 t ADT: 725

CNTY.ROAD-FAS# 370

Over: BIG HOLLOW WASH

1.8 MI.SO. OF WECCO PLANT, Iron, UT

Built 1989 Load: 19.8 t ADT: 1,374

WINDING ROAD

Over: LITTLE CREEK

NO DATA ENTERED, Iron, UT

Built 1960 Load: 19.8 t ADT: 50

SR-56

Over: PINTO WASH

0.6 MI.EAST OF NEWCASTLE, Iron, UT

Built 1949 Load: 20.7 t ADT: 2,170

COUNTY ROAD

Over: NEW CASTLE CREEK

300 E. 100 N., NEW CASTLE, Iron, UT

Built 2002 Load: 24.6 t ADT: 378

SR-14

Over: ROCKY CANYON WASH

3.5 MI EAST CEDAR CITY, Iron, UT

Built 1950 Load: 26.6 t ADT: 2,890

SR-14

Over: SALT CREEK

2.1 MILES EAST CEDAR CITY, Iron, UT

Built 1950 Load: 26.9 t ADT: 2,890

SR-130

Over: COAL CREEK & WALKWAY

NORTH SIDE OF CEDAR CITY, Iron, UT

Built 1951 Load: 27.2 t ADT: 22,672

Airport Rd

Over: Coal Creek

N. Airport Rd., Iron, UT

Built 2007 Load: 27.5 t ADT: 7,759

I-15 (SR-15) NBL

Over: COAL CREEK

1.1 MI.NO.CEDAR CITY INT., Iron, UT

Built 1968 Load: 27.5 t ADT: 35,682

I-15 (SR-15) SBL

Over: COAL CREEK

1.1 MI.NO.CEDAR CITY INT., Iron, UT

Built 1968 Load: 28.5 t ADT: 35,682

COUNTY ROAD

Over: FREMONT WASH

0.5 MI.NO.BEAR VALLEY INT, Iron, UT

Built 1939 Load: 29.5 t ADT: 7

CO. RD.NW KANARRAV

Over: I-15 (SR-15) NBL & SBL

5.5 MI.NO.NEW HARMONY INT, Iron, UT

Built 1987 Load: 29.5 t ADT: 2,000

SR-56

Over: UNION PACIFIC RAILROAD

0.5 MI.EAST OF MODENA, Iron, UT

Built 1959 Load: 29.8 t ADT: 1,016

I-15 (SR-15)NB&SB

Over: KANARRA CREEK

3.5 MI.N.NEW HARMONY INt, Iron, UT

Built 1966 Load: 30.1 t ADT: 33,319

COUNTY ROAD

Over: COAL CREEK

RIGHT HAND FORK CANYON, Iron, UT

Built 1995 Load: 32.4 t ADT: 77

Paint Shop Rd

Over: Coal Creek

Paint Shop Rd, Iron, UT

Built 1987 Load: 32.4 t ADT: 50

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

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Compiled by PlainBridges, Independent data publisher

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.