US Bridges

Highway F-48 W over Over Iais RR

Fair

Jasper County, Iowa · 079200503 · Structure no. 000000000030391

Built
1977
48 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
167 ft
3 main spans
Daily traffic
1,470
2022 count
Owner
County
County Highway Agency

About this bridge

Highway F-48 W over Over Iais RR is a prestressed concrete stringer/multi-beam or girder carrying Highway F-48 W over Over Iais RR in Jasper County, Iowa. It was built in 1977, so it is 48 years old, older than the Iowa average of 45.5 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 1,470 vehicles a day, roughly 9% of them trucks, projected to reach 1,470 by 2043. The structure is 167 ft (50.9 m) long and 47 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesHighway F-48 W
CrossesOver Iais RR
Location079200503
RouteCounty Highway 0
CountyJasper County
StateIowa
Coordinates41.68236, -93.21009
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.9 US tons
Inventory rating32.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length167 ft (50.9 m)
Longest span55 ft (16.8 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,470 (2022)
Projected traffic1,470 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed8.7 mi (14 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Highway F-48 W over Over Iais RR built?

It was built in 1977, making it 48 years old in 2025.

What condition is Highway F-48 W over Over Iais RR 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 April 2023.

How much traffic does Highway F-48 W over Over Iais RR carry?

About 1,470 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Highway F-48 W over Over Iais RR?

The structure is 167 ft (50.9 m) long with a longest span of 55 ft (16.8 m) and a deck 47 ft wide.

Who owns Highway F-48 W over Over Iais RR?

It is owned by the County Highway Agency.