US Bridges

SH 29 over Comanche Creek

Fair

Mason County, Texas · 0.60 MI E of US 87 · Structure no. 141570015001017

Built
1939
86 years old, rebuilt 1969
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
250 ft
5 main spans
Daily traffic
3,472
2020 count
Owner
State
State Highway Agency

About this bridge

SH 29 over Comanche Creek is a steel stringer/multi-beam or girder carrying SH 29 over Comanche Creek in Mason County, Texas. It was built in 1939 and reconstructed in 1969, so it is 86 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 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 3,472 vehicles a day, roughly 13% of them trucks, projected to reach 3,970 by 2033. The structure is 250 ft (76.2 m) long and 66 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesSH 29
CrossesComanche Creek
Location0.60 MI E of US 87
RouteState Highway 29
CountyMason County
StateTexas
Coordinates30.74777, -99.22063
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length250 ft (76.2 m)
Longest span50 ft (15.2 m)
Deck width66 ft (20.2 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,472 (2020)
Projected traffic3,970 by 2033
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 29 over Comanche Creek built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1969.

What condition is SH 29 over Comanche 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 June 2023.

How much traffic does SH 29 over Comanche Creek carry?

About 3,472 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is SH 29 over Comanche Creek?

The structure is 250 ft (76.2 m) long with a longest span of 50 ft (15.2 m) and a deck 66 ft wide.

Who owns SH 29 over Comanche Creek?

It is owned by the State Highway Agency.