US Bridges

Ia 149 over Branch Old Mans Creek

Fair

Iowa County, Iowa · 2.0 Mi. N of SR F52 · Structure no. 000000000029471

Built
1985
40 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
146 ft
3 main spans
Daily traffic
1,910
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 149 over Branch Old Mans Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 149 over Branch Old Mans Creek in Iowa County, Iowa. It was built in 1985, so it is 40 years old, younger 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 6 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 1,910 vehicles a day, roughly 11% of them trucks, projected to reach 1,910 by 2042. The structure is 146 ft (44.5 m) long and 43 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesIa 149
CrossesBranch Old Mans Creek
Location2.0 Mi. N of SR F52
RouteState Highway 149
CountyIowa County
StateIowa
Coordinates41.61499, -92.00725
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.2 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span57 ft (17.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,910 (2022)
Projected traffic1,910 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 149 over Branch Old Mans Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Ia 149 over Branch Old Mans Creek 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 May 2023.

How much traffic does Ia 149 over Branch Old Mans Creek carry?

About 1,910 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Ia 149 over Branch Old Mans Creek?

The structure is 146 ft (44.5 m) long with a longest span of 57 ft (17.4 m) and a deck 43 ft wide.

Who owns Ia 149 over Branch Old Mans Creek?

It is owned by the State Highway Agency.