US Bridges

Rd.To Hamilton Ft. over I-15 (SR-15) Nbl & Sbl

Fair

Iron County, Utah · 2.6 Mi. So. of Cedar City · Structure no. 0C 501

Built
1967
58 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
227 ft
4 main spans
Daily traffic
1,327
2022 count
Owner
State
State Highway Agency

About this bridge

Rd.To Hamilton Ft. over I-15 (SR-15) Nbl & Sbl is a steel continuous stringer/multi-beam or girder carrying Rd.To Hamilton Ft. over I-15 (SR-15) Nbl & Sbl in Iron County, Utah. It was built in 1967, so it is 58 years old, older than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 1,327 vehicles a day, projected to reach 1,592 by 2042. The structure is 227 ft (69.3 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesRd.To Hamilton Ft.
CrossesI-15 (SR-15) Nbl & Sbl
Location2.6 Mi. So. of Cedar City
RouteCounty Highway 1752
CountyIron County
StateUtah
Coordinates37.62917, -113.11833
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length227 ft (69.3 m)
Longest span80 ft (24.4 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic1,327 (2022)
Projected traffic1,592 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Rd.To Hamilton Ft. over I-15 (SR-15) Nbl & Sbl built?

It was built in 1967, making it 58 years old in 2025.

What condition is Rd.To Hamilton Ft. over I-15 (SR-15) Nbl & Sbl 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 March 2023.

How much traffic does Rd.To Hamilton Ft. over I-15 (SR-15) Nbl & Sbl carry?

About 1,327 vehicles per day (2022 count).

How long is Rd.To Hamilton Ft. over I-15 (SR-15) Nbl & Sbl?

The structure is 227 ft (69.3 m) long with a longest span of 80 ft (24.4 m) and a deck 33 ft wide.

Who owns Rd.To Hamilton Ft. over I-15 (SR-15) Nbl & Sbl?

It is owned by the State Highway Agency.