US Bridges

Bradford ST over Shell Rock River

Good

Floyd County, Iowa · 094171701 · Structure no. 000000000007661

Built
1996
29 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
316 ft
3 main spans
Daily traffic
813
2022 count
Owner
County
County Highway Agency

About this bridge

Bradford ST over Shell Rock River is a prestressed concrete stringer/multi-beam or girder carrying Bradford ST over Shell Rock River in Floyd County, Iowa. It was built in 1996, so it is 29 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 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 813 vehicles a day, roughly 27% of them trucks, projected to reach 813 by 2043. The structure is 316 ft (96.3 m) long and 40 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesBradford ST
CrossesShell Rock River
Location094171701
RouteCity Street 0
CountyFloyd County
StateIowa
Coordinates42.96511, -92.87152
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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69.6 US tons
Inventory rating41.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length316 ft (96.3 m)
Longest span121 ft (36.9 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic813 (2022)
Projected traffic813 by 2043
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bradford ST over Shell Rock River built?

It was built in 1996, making it 29 years old in 2025.

What condition is Bradford ST over Shell Rock River 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 March 2023.

How much traffic does Bradford ST over Shell Rock River carry?

About 813 vehicles per day (2022 count), of which roughly 27% are trucks.

How long is Bradford ST over Shell Rock River?

The structure is 316 ft (96.3 m) long with a longest span of 121 ft (36.9 m) and a deck 40 ft wide.

Who owns Bradford ST over Shell Rock River?

It is owned by the County Highway Agency.