US Bridges

IH 35 Efr over Alligator Creek

Good

Comal County, Texas · 3.2 MI N of SH 46 · Structure no. 150460001604187

Built
1988
37 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete
Length
255 ft
10 main spans
Daily traffic
2,480
2013 count
Owner
State
State Highway Agency

About this bridge

IH 35 Efr over Alligator Creek is a concrete slab carrying IH 35 Efr over Alligator Creek in Comal County, Texas. It was built in 1988, so it is 37 years old, younger than the Texas average of 44.4 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 2,480 vehicles a day, roughly 16% of them trucks, projected to reach 3,480 by 2033. The structure is 255 ft (77.7 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 35 Efr
CrossesAlligator Creek
Location3.2 MI N of SH 46
RouteInterstate 35
StateTexas
Coordinates29.73705, -98.06815
Functional classUrban Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length255 ft (77.7 m)
Longest span26 ft (7.9 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,480 (2013)
Projected traffic3,480 by 2033
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 IH 35 Efr over Alligator Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is IH 35 Efr over Alligator Creek 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 June 2024.

How much traffic does IH 35 Efr over Alligator Creek carry?

About 2,480 vehicles per day (2013 count), of which roughly 16% are trucks.

How long is IH 35 Efr over Alligator Creek?

The structure is 255 ft (77.7 m) long with a longest span of 26 ft (7.9 m) and a deck 38 ft wide.

Who owns IH 35 Efr over Alligator Creek?

It is owned by the State Highway Agency.