US Bridges

160 ST over Brophy Creek

Good

Clinton County, Iowa · 082E50403 · Structure no. 000000000123952

Built
2000
25 years old
Condition
Good
inspected February 2025
Type
Tee Beam
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
41
2022 count
Owner
County
County Highway Agency

About this bridge

160 ST over Brophy Creek is a prestressed concrete tee beam carrying 160 ST over Brophy Creek in Clinton County, Iowa. It was built in 2000, so it is 25 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 41 vehicles a day, projected to reach 41 by 2045. The structure is 36 ft (11 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Carries160 ST
CrossesBrophy Creek
Location082E50403
RouteCounty Highway 0
StateIowa
Coordinates41.94345, -90.38833
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.8 US tons
Inventory rating43.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2022)
Projected traffic41 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 160 ST over Brophy Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is 160 ST over Brophy Creek 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 February 2025.

How much traffic does 160 ST over Brophy Creek carry?

About 41 vehicles per day (2022 count).

How long is 160 ST over Brophy Creek?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 24 ft wide.

Who owns 160 ST over Brophy Creek?

It is owned by the County Highway Agency.