US Bridges

IH 35 over Dietz Creek

Fair

Guadalupe County, Texas · 0.7 MI North of Bexar C/L · Structure no. 150950001606021

Built
1934
91 years old, rebuilt 1993
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
93 ft
14 main spans
Daily traffic
94,227
2020 count
Owner
State
State Highway Agency

About this bridge

IH 35 over Dietz Creek is a concrete culvert carrying IH 35 over Dietz Creek in Guadalupe County, Texas. It was built in 1934 and reconstructed in 1993, so it is 91 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 94,227 vehicles a day, roughly 14% of them trucks, projected to reach 155,920 by 2033. The structure is 93 ft (28.3 m) long and 274 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 35
CrossesDietz Creek
Location0.7 MI North of Bexar C/L
RouteInterstate 35
CountyGuadalupe County
StateTexas
Coordinates29.59057, -98.29512
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans14
Design loadH 15
Structure length93 ft (28.3 m)
Longest span6 ft (1.8 m)
Deck width274 ft (83.5 m)
Roadway width153 ft (46.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic94,227 (2020)
Projected traffic155,920 by 2033
Trucks14%
Lanes on structure12
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$14,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 35 over Dietz Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1993.

What condition is IH 35 over Dietz 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 over Dietz Creek carry?

About 94,227 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is IH 35 over Dietz Creek?

The structure is 93 ft (28.3 m) long with a longest span of 6 ft (1.8 m) and a deck 274 ft wide.

Who owns IH 35 over Dietz Creek?

It is owned by the State Highway Agency.