US Bridges

IH 35 Ml over South Fork Plum Creek

Fair

Hays County, Texas · 1.1 MI N of RM 150 · Structure no. 141060001602109

Built
1961
64 years old, rebuilt 1991
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
116,120
2023 count
Owner
State
State Highway Agency

About this bridge

IH 35 Ml over South Fork Plum Creek is a prestressed concrete stringer/multi-beam or girder carrying IH 35 Ml over South Fork Plum Creek in Hays County, Texas. It was built in 1961 and reconstructed in 1991, so it is 64 years old, older than the Texas average of 44.4 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 116,120 vehicles a day, roughly 17% of them trucks, projected to reach 162,568 by 2042. The structure is 100 ft (30.5 m) long and 114 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 35 Ml
CrossesSouth Fork Plum Creek
Location1.1 MI N of RM 150
RouteInterstate 35
StateTexas
Coordinates30.0031, -97.86639
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span50 ft (15.2 m)
Deck width114 ft (34.7 m)
Roadway width110 ft (33.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic116,120 (2023)
Projected traffic162,568 by 2042
Trucks17%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$138,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 35 Ml over South Fork Plum Creek built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1991.

What condition is IH 35 Ml over South Fork Plum 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 August 2024.

How much traffic does IH 35 Ml over South Fork Plum Creek carry?

About 116,120 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is IH 35 Ml over South Fork Plum Creek?

The structure is 100 ft (30.5 m) long with a longest span of 50 ft (15.2 m) and a deck 114 ft wide.

Who owns IH 35 Ml over South Fork Plum Creek?

It is owned by the State Highway Agency.